| Patents for G01H 13 - Measuring resonant frequency (1,015) |
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| 12/20/2012 | US20120318062 Vibration determination method and vibration determination device |
| 11/28/2012 | CN102798529A Method and system for diagnosing bearing faults of large-size wind turbine bearing |
| 11/28/2012 | CN102798461A Vibration measurer |
| 11/21/2012 | CN202547766U Fiber bragg grating vibration sensing measurement system |
| 11/15/2012 | WO2012153739A1 Probe and measuring device provided with same |
| 11/15/2012 | WO2012152328A1 System and method for determining a natural frequency of an ultrasonic transducer |
| 11/08/2012 | US20120279283 Apparatus and method for operating an apparatus for determining and/or monitoring at least one physical process variable |
| 11/06/2012 | US8302478 Magnetostrictive substance detection system and method |
| 11/06/2012 | US8302477 Balanced mechanical resonator for powder handling device |
| 10/23/2012 | US8291767 Vibration testing device |
| 10/17/2012 | EP2509412A1 Sample storage and monitoring system |
| 10/17/2012 | CN102742105A Wire conductor contact detection device, wire conductor contact detection method, and wire conductor contact detection program |
| 10/16/2012 | US8286486 Molecular control of surface coverage |
| 10/10/2012 | CN102725631A Cluster analysis system and method to improve sorting performance |
| 10/09/2012 | US8281660 Integrated torsional-microbalance device in MEMS technology and fabrication process thereof |
| 09/26/2012 | EP2502063A1 Cluster analysis system and method to improve sorting performance |
| 09/13/2012 | US20120232843 Methods for characterizing vibration of a rack structure |
| 09/13/2012 | US20120227497 Gyroscopic sensor |
| 09/05/2012 | CN102147285B Device for measuring torsional resonance frequency and method therefor |
| 07/31/2012 | US8230724 Measurement chamber and resonator |
| 07/19/2012 | US20120180568 External force detecting device and external force detecting sensor |
| 07/19/2012 | US20120180567 External force detecting method and external force detecting device |
| 07/18/2012 | CN102589675A Method for measuring mechanical resonance frequency by using servo driver |
| 07/11/2012 | CN102565848A Method and apparatus for detecting Karst cave by resonance wave imaging |
| 07/11/2012 | CN102564561A Test method for natural frequency of blade of integral blade disc |
| 07/04/2012 | CN102538950A Acoustic testing method for inherent frequency of engine part |
| 06/21/2012 | WO2012079574A1 Apparatus for estimating a resonant frequency of a wind turbine tower |
| 06/21/2012 | DE102010063442A1 Sound-wave-based sensor i.e. ultrasound sensor, for detecting objects in environment of motor car during parking process, has membrane for generating and/or detecting sound waves and comprising protecting layers that are made of polymer |
| 06/21/2012 | DE102010063438A1 Schallwellenbasierter Sensor zur Umfelddetektion und Verwendung desselben The same sound wave-based sensor for detecting environment and use |
| 06/19/2012 | US8204716 System and method for characterizing vibration of a rack structure |
| 06/07/2012 | WO2012074652A1 Voice-estimation based on real-time probing of the vocal tract |
| 05/30/2012 | CN101701871B Whole-machine test method and system for wind turbine |
| 05/23/2012 | EP2454568A2 A system and method for measuring a resonance frequency of a tube |
| 05/23/2012 | CN102472661A 用于测量管的共振频率的系统和方法 System and method for measuring the resonant frequency of the tube for |
| 05/17/2012 | US20120121059 System for measuring the frequency of a vibrating wire sensor using a digital counter system |
| 05/17/2012 | US20120118063 Apparatus and method for measuring buoyant mass and deformability of single cells |
| 05/10/2012 | US20120116238 System and method for measuring a resonance frequency of a tube |
| 05/10/2012 | US20120112765 MEMS In-Plane Resonators |
| 05/10/2012 | US20120111114 Method and Apparatus for Determining an Operating Point of a Work Machine |
| 05/02/2012 | EP2446234A2 Determining the resonance parameters for mechanical oscillators |
| 04/18/2012 | CN1784589B Method and system for monitoring the performance of a pipe containing a pressurised fluid |
| 04/18/2012 | CN102141430B 声波和电磁波协同无线测量样件谐振频率的方法和系统 Acoustic and electromagnetic synergistic sample resonant frequency of the wireless measurement method and system |
| 04/17/2012 | US8156809 Systems and methods for resonance detection |
| 04/12/2012 | US20120085172 Measuring system for resonant frequency measurements on disc brake pads |
| 03/22/2012 | US20120067125 Physical quantity sensor |
| 03/22/2012 | US20120067124 Resonant sensing using extensional modes of a plate |
| 03/15/2012 | US20120060608 Passage detection apparatus of object |
| 03/15/2012 | US20120060607 Vibration transducer and its manufacturing method |
| 03/14/2012 | EP2427747A1 Method and device for testing the stability of a pole |
| 02/29/2012 | EP2423654A1 Micromechanical sensor with bandpass characteristics |
| 02/16/2012 | US20120036932 Testing technique for determination of the dynamic poisson's ratio of a material with longitudinal and cross-sectional resonant frequencies of a circular solid rod specimen |
| 02/15/2012 | CN102116671B 测量发电机组轴系模态频率的扫频方法 Measuring turbine shafting modal frequency sweep method |
| 01/24/2012 | US8100016 Vibratory sensor |
| 01/12/2012 | US20120006430 Method for monitoring a body inserted in a conduit and insert for electromagnetic resonance measurements |
| 12/29/2011 | WO2011163584A1 Self-cleaning film thickness measuring apparatus, and method of cleaning film thickness measuring apparatus |
| 12/28/2011 | CN102004041B 基于半车质量模拟状态下的转向架悬挂自振特性试验台 Based on semi-truck vehicle quality simulation mode vibration characteristics under suspension test rig |
| 12/22/2011 | US20110313689 Acoustic detection for respiratory treatment apparatus |
| 12/22/2011 | DE102010024058A1 Device for determining filling level of container, has sound sensor attached to container, where sound sensor is connected to evaluation unit, and evaluation unit is arranged for determining helmholtz frequency of sound waves |
| 12/15/2011 | WO2011154309A1 Method for detecting contamination or other functional disturbance of an ultrasonic sensor of a parking aid for a motor vehicle |
| 12/15/2011 | US20110303012 Method and device for measuring the thickness of any deposit of material on an inner wall of a structure |
| 12/08/2011 | US20110296921 Method of designing tire and tire |
| 12/01/2011 | WO2011005454A3 Determining the resonance parameters for mechanical oscillators |
| 11/30/2011 | EP2329238B1 Oscillating element sensor for detecting boundary layer transition |
| 11/16/2011 | CN101876567B Tracking testing system of resonant frequency of quartz crystal microbalance and method thereof |
| 10/25/2011 | US8043217 Method and apparatus to quantify specific material properties of objects using real-time ultrasound burst spectrography technique |
| 10/20/2011 | DE102010027780A1 Verfahren zum Ansteuern eines Ultraschallsensors und Ultraschallsensor A method for driving an ultrasonic sensor and ultrasonic sensor |
| 10/19/2011 | EP2378286A1 Rapid interrogation method for elastic wave transducers |
| 10/05/2011 | EP2370375A2 Vibro-acoustically effective aggregate |
| 09/28/2011 | CN101424665B Panel inspection apparatus and inspection method |
| 09/15/2011 | WO2011111238A1 Wire conductor contact detection device, wire conductor contact detection method, and wire conductor contact detection program |
| 09/15/2011 | WO2011111184A1 Core wire contact detection device, core wire contact detection method, and core wire contact detection program |
| 09/14/2011 | CN102183297A Measurement method |
| 09/13/2011 | CA2496935C System and method for acoustic chaos in sonic infrared imaging |
| 09/01/2011 | US20110209546 Method and device for vibration analyses and sample database therefor and use of a sample database |
| 08/31/2011 | CN201955152U 敲击法测试混凝土抗冻试件自振频率的系统 Percussion method to test concrete frost specimens system natural frequency |
| 08/31/2011 | CN201955151U 测振器 Vibration measurement |
| 08/11/2011 | WO2011007315A3 A system and method for measuring a resonance frequency of a tube |
| 08/10/2011 | CN102147285A Device for measuring torsional resonance frequency and method therefor |
| 08/03/2011 | CN102141430A Method and system for wirelessly measuring resonant frequency of sample piece by combination of sound waves and electromagnetic waves |
| 08/02/2011 | US7987718 Vibroacoustic system for vibration testing |
| 07/27/2011 | CN201909668U Measuring device for eigenfrequency of piezoelectric wafer |
| 07/07/2011 | WO2011027013A3 Methods for measuring the load of fixing elements used to join parts |
| 07/06/2011 | CN201892570U Contact resonance frequency detecting system for atomic force acoustic microscope cantilever beam |
| 07/06/2011 | CN102116671A Frequency-sweep method for measuring modal frequency of shaft system of generator set |
| 06/29/2011 | CN201886318U Ultrasonic welding power supply system |
| 06/29/2011 | CN201886155U Device adopting resonance wave imaging to detect karst caves |
| 06/23/2011 | US20110146406 Methods and apparatus for vibration testing using multiple sine sweep excitation |
| 06/23/2011 | US20110146405 Differential Pressure Measuring Probe With Bottoming Indicator |
| 06/22/2011 | CN102105767A Oscillating element sensor for detecting boundary layer transition |
| 06/21/2011 | US7965850 Resonance frequency determining method, resonance frequency selecting method, and resonance frequency determining apparatus |
| 06/16/2011 | WO2011069190A1 Sample storage and monitoring system |
| 06/16/2011 | US20110144929 Torsional resonance frequency measuring device and method |
| 06/16/2011 | US20110138916 Self-exciting, self-sensing piezoelectric cantilever sensor |
| 06/16/2011 | US20110138915 Detecting an analyte using a piezoelectric cantilever sensor |
| 06/15/2011 | CN201867297U Bogie suspension self-vibration characteristic test stand based on half vehicle mass simulation status |
| 06/08/2011 | EP2329238A1 Oscillating element sensor for detecting boundary layer transition1 |
| 05/26/2011 | WO2011062866A1 Cluster analysis system and method to improve sorting performance |
| 05/25/2011 | CN101581601B Detection method, micro-electromechanical component and micro-detection structure of micro-mechanical structure |
| 05/18/2011 | CN201837451U Clamp for measuring hard disk driving frame and device applying same |
| 05/17/2011 | US7944367 Phase signal triggering hold off |