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公开(公告)号：US20180191231A1
公开(公告)日：2018-07-05
申请号：US15737275
申请日：2016-06-16
发明人： Roy Saibal , Pranay Podder , Dhiman Mallick , Andreas Amann
CPC分类号： H02K35/02 , G01H11/02 , G01H11/08 , G01R17/00 , H01L41/1132 , H01L41/1136 , H02N2/186
摘要： A vibrational energy harvesting device is disclosed, which comprises first and second assemblies mounted on a base at a distance one from the other. The first assembly comprises vibrational means adapted to stretch under a straining force, whereby the device exhibits monostable quartic nonlinearity. The first and second assemblies comprise respective magnetised means in opposite polarity to one another, so that the second assembly exerts a repulsive magnetic force upon the vibrational means, whereby the device exhibits bistability. Both the monostable quartic and bistable nonlinearities can be independently controlled. A method of harvesting energy with the vibrational energy harvesting device is also disclosed.
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公开(公告)号：US20180068646A1
公开(公告)日：2018-03-08
申请号：US15798829
申请日：2017-10-31
CPC分类号： G10H3/146 , G01H1/00 , G01H11/00 , G01H11/02 , G01H11/08 , G10D13/024 , G10H1/14 , G10H3/12 , G10H3/143 , G10H7/008 , G10H2210/041 , G10H2210/051 , G10H2210/281 , G10H2220/091 , G10H2220/525 , G10H2230/281 , G10H2250/235 , G10H2250/311 , G10H2250/435 , G10H2250/641
摘要： A device is provided as part of a system, the device being for capturing vibrations produced by an object such as a musical instrument. Via a fixation element, the device is fixed to a drum. The device has a sensor spaced apart from a surface of the drum, located relative to the drum, and a magnet adjacent the sensor. The fixation element transmits vibrations from its fixation point on the drum to the magnet. Vibrations from the surface of the drum and from the magnet are transmitted to the sensor. A method may further be provided for interpreting an audio input, such as the output of the sensors within the system, the method comprising identifying an audio event or grouping of audio events within audio data, generating a model of the audio event that includes a representation of a timbre characteristic, and comparing that representation to expected representations.
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公开(公告)号：US09633637B1
公开(公告)日：2017-04-25
申请号：US14747761
申请日：2015-06-23
发明人： Eric Hood , Thomas Korber Hall
摘要： A tuning device and method for tuning or verifying the tuning of a string of a stringed instrument is provided. The device includes an electromagnetic pickup physically separate from the stringed instrument. The electromagnetic pickup is a noise cancelling pickup. The electromagnetic pickup ultimately provides an electrical signal indicative of a movement of the string in a magnetic field of the electromagnetic pickup to a processor electronic tuner. Optional features of the electromagnetic pickup increase the effective range of the pickup.
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公开(公告)号：US20170103743A1
公开(公告)日：2017-04-13
申请号：US15386840
申请日：2016-12-21
CPC分类号： G10H3/146 , G01H1/00 , G01H11/00 , G01H11/02 , G01H11/08 , G10D13/024 , G10H1/14 , G10H3/12 , G10H3/143 , G10H7/008 , G10H2210/041 , G10H2210/051 , G10H2210/281 , G10H2220/091 , G10H2220/525 , G10H2230/281 , G10H2250/235 , G10H2250/311 , G10H2250/435 , G10H2250/641
摘要： A device is provided as part of a system, the device being for capturing vibrations produced by an object such as a musical instrument. Via a fixation element, the device is fixed to a drum. The device has a sensor spaced apart from a surface of the drum, located relative to the drum, and a magnet adjacent the sensor. The fixation element transmits vibrations from its fixation point on the drum to the magnet. Vibrations from the surface of the drum and from the magnet are transmitted to the sensor. A method may further be provided for interpreting an audio input, such as the output of the sensors within the system, the method comprising identifying an audio event or grouping of audio events within audio data, generating a model of the audio event that includes a representation of a timbre characteristic, and comparing that representation to expected representations.
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公开(公告)号：US20160304192A1
公开(公告)日：2016-10-20
申请号：US14688831
申请日：2015-04-16
IPC分类号： B64C27/00 , G01H9/00 , G01M17/007 , B64D45/00
CPC分类号： B64C27/006 , B64D45/00 , B64D2045/0085 , G01H1/003 , G01H11/02 , G01M13/028 , G01M13/045 , G01M15/042 , G01M15/12 , G01M17/00 , G01M17/007
摘要： A method and apparatus for determining failure diagnosis of drive systems of rotorcrafts through measuring the spectral characteristics of rotational oscillations and torsional oscillations and steady windup of a drive shaft. Mechanical anomalies of the drive system will alter the spectral characteristics of rotational oscillations and torsional oscillations and steady windup as detected by a pair of variable reluctance sensors in conjunction with a radial grating mounted on the drive shaft.
摘要翻译： 一种用于通过测量旋转振荡和扭转振荡的光谱特性以及驱动轴的稳定卷绕来确定旋翼航空器的驱动系统的故障诊断的方法和装置。 驱动系统的机械异常将改变由一对可变磁阻传感器与安装在驱动轴上的径向光栅一起检测的旋转振荡和扭转振荡的光谱特性以及稳定的卷绕。
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公开(公告)号：US20150264498A1
公开(公告)日：2015-09-17
申请号：US13771735
申请日：2013-02-20
申请人： U.S.A. as represented by the Administrator of the National Aeronautics and Space Administration
发明人： Qamar A. Shams , Allan J. Zuckerwar
IPC分类号： H04R29/00
摘要： The present invention is an extremely low frequency (ELF) microphone and acoustic measurement system capable of infrasound detection in a portable and easily deployable form factor. In one embodiment of the invention, an extremely low frequency electret microphone comprises a membrane, a backplate, and a backchamber. The backchamber is sealed to allow substantially no air exchange between the backchamber and outside the microphone. Compliance of the membrane may be less than ambient air compliance. The backplate may define a plurality of holes and a slot may be defined between an outer diameter of the backplate and an inner wall of the microphone. The locations and sizes of the holes, the size of the slot, and the volume of the backchamber may be selected such that membrane motion is substantially critically damped.
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公开(公告)号：US08401217B2
公开(公告)日：2013-03-19
申请号：US11780500
申请日：2007-07-20
申请人： Qamar A. Shams , Allan J. Zuckerwar
发明人： Qamar A. Shams , Allan J. Zuckerwar
IPC分类号： H04R1/20
摘要： The present invention is an extremely low frequency (ELF) microphone and acoustic measurement system capable of infrasound detection in a portable and easily deployable form factor. In one embodiment of the invention, an extremely low frequency electret microphone comprises a membrane, a backplate, and a backchamber. The backchamber is sealed to allow substantially no air exchange between the backchamber and outside the microphone. Compliance of the membrane may be less than ambient air compliance. The backplate may define a plurality of holes and a slot may be defined between an outer diameter of the backplate and an inner wall of the microphone. The locations and sizes of the holes, the size of the slot, and the volume of the backchamber may be selected such that membrane motion is substantially critically damped.
摘要翻译： 本发明是一种极低频（ELF）麦克风和声学测量系统，其能够在便携和易于展开的形状因子中进行次声检测。 在本发明的一个实施例中，极低频驻极体麦克风包括膜，背板和后室。 后室被密封以允许在后室与麦克风外部基本上不进行空气交换。 膜的符合性可能小于环境空气的一致性。 背板可以限定多个孔，并且可以在背板的外径和麦克风的内壁之间限定狭槽。 可以选择孔的位置和尺寸，槽的尺寸和后室的体积，使得膜运动基本上被临界阻尼。
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公开(公告)号：US20120059604A1
公开(公告)日：2012-03-08
申请号：US13225732
申请日：2011-09-06
申请人： Geeng-Jen Sheu , Shih-Hung Yeh
发明人： Geeng-Jen Sheu , Shih-Hung Yeh
IPC分类号： G06F19/00
CPC分类号： G01H11/02
摘要： A contactless vibration meter having a magnetic strip, a detector, and a processor is disclosed. The N-pole blocks of the magnetic strip are unequal lengths and the S-pole blocks of the magnetic strip are also unequal lengths, the detector is detecting the N-pole blocks of the magnetic strip with unequal lengths and the S-pole blocks of the magnetic strip with unequal lengths, and the voltage variation due to the change of the magnetoresistance of the detector is calculated by the processor, so as to transfer to corresponding vibrating waveform, thereby being capable of obtaining the vibrating information of the tested object. It is not limited by the space of the factory or the pattern of the tested object, and capable of being attached to detect immediately.
摘要翻译： 公开了一种具有磁条，检测器和处理器的非接触式振动计。 磁条的N极块不等长，磁条的S极块也不等长，检测器正在检测不等长度的磁条的N极块，而S极块的 通过处理器计算出具有不等长度的磁条和由于检测器的磁阻的变化引起的电压变化，从而转移到相应的振动波形，从而能够获得被测物体的振动信息。 它不受工厂的空间或测试对象的图案的限制，并且能够被立即检测。
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公开(公告)号：US07975550B2
公开(公告)日：2011-07-12
申请号：US12111841
申请日：2008-04-29
申请人： Myung Lae Lee , Chang Han Je , Sung Sik Lee , Sung Hae Jung , Chang Auck Choi , Gunn Hwang
发明人： Myung Lae Lee , Chang Han Je , Sung Sik Lee , Sung Hae Jung , Chang Auck Choi , Gunn Hwang
CPC分类号： G01H11/02
摘要： There is provided a micromachined sensor for measuring a vibration, based on silicone micromachining technology, in which a conductor having elasticity is connected to masses moving due to a force generated by the vibration and the vibration is measured by using induced electromotive force generated due to the conductor moving in a magnetic field.
摘要翻译： 提供了一种用于测量振动的微机械传感器，其基于有机硅微加工技术，其中具有弹性的导体由于由振动产生的力连接到质量移动，并且通过使用由于振动产生的感应电动势来测量振动 导体在磁场中移动。
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10.发明申请Magnetic drive for high and low temperature mechanical oscillators used in sensor applications 有权用于传感器应用的高低温机械振荡器的磁驱动公开(公告)号：US20080055013A1
公开(公告)日：2008-03-06
申请号：US11784183
申请日：2007-04-05
申请人： Manuel Alvarez , Henry Wolf , Martin Mellert , Josef Fehrenbach
发明人： Manuel Alvarez , Henry Wolf , Martin Mellert , Josef Fehrenbach
IPC分类号： H03B5/30
摘要： A magnetic drive and mechanical oscillator system comprising a mechanical oscillator, a coil, a means for providing alternating current to said coil thereby creating a magnetic field within and about the coil, said means including an on-off means and a ferromagnetic material in communication with the diaphragm of the mechanical oscillator and the coil.
摘要翻译： 一种磁驱动和机械振荡器系统，包括机械振荡器，线圈，用于向所述线圈提供交流电流的装置，从而在所述线圈内和周围产生磁场，所述装置包括开 - 关装置和与 机械振荡器的振膜和线圈。
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