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公开(公告)号：US4583207A
公开(公告)日：1986-04-15
申请号：US444988
申请日：1982-11-29
申请人： Sedley J. Greer, Jr.
发明人： Sedley J. Greer, Jr.
摘要： A magnetohydrodynamic geophone for seismological detection. The geophone is of rigid shock resistant design, including a sealed, rigid generally conically shaped housing which is adapted to be firmly embedded within the ground in bedrock or the like, in or adjacent to an area to be seismologically monitored. The shock resistant housing includes an isolated interior for receiving an MHD sensor which detects the seismological vibration. The sensor includes a generally tubular conduit containing an electrically conductive fluid, preferably mercury or an electrolyte. A very strong magnetic field is set up perpendicularly with respect to the plane occupied by the conduit. An electric field is generated through the Faraday Effect in response to vibrations. Preferably the conduit is of ring shaped configuration, and the conductive fluid is continuously circulated throughout it. A steady state operating point is thus established, and perturbations established by vibration are detected by associated high gain amplification circuitry which processes the electric field signals sensed by electrodes attached to the conduit. The electrodes are attached to the conduit and oriented generally perpendicular with respect to the magnetic field.
摘要翻译： 用于地震检测的磁流体动力地震检波器。 地音检波器具有刚性抗冲击设计，包括密封的，刚性的大致圆锥形的壳体，其适于牢固地嵌入在基岩等中的地面内或邻近待地震监测的区域。 抗震外壳包括隔离的内部，用于接收检测地震振动的MHD传感器。 该传感器包括一个大体上管状的导管，其中含有导电流体，优选为汞或电解质。 相对于由管道占据的平面垂直地设置非常强的磁场。 响应于振动，通过法拉第效应产生电场。 优选地，导管是环形构造，并且导电流体在其中连续循环。 因此建立了稳态工作点，并且通过相关联的高增益放大电路检测由振动建立的扰动，所述高增益放大电路处理由连接到导管的电极感测的电场信号。 电极连接到导管并相对于磁场大致垂直取向。
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公开(公告)号：US4424705A
公开(公告)日：1984-01-10
申请号：US335284
申请日：1981-12-28
申请人： Tadashi Hattori , Masanori Hanaoka , Yukihide Hashiguchi , Yoshinori Ootsuka , Hiroaki Yamaguchi
发明人： Tadashi Hattori , Masanori Hanaoka , Yukihide Hashiguchi , Yoshinori Ootsuka , Hiroaki Yamaguchi
CPC分类号： G01H11/02 , G01L23/223
摘要： A knocking sensing apparatus for sensing a knocking taking place in an internal combustion engine. The apparatus includes a diaphragm adapted to operate in response to the pressure of cooling water circulated in the engine, magnetism generating device, magnetic circuit including the diaphragm, and a magnetic flux detecting device adapted to detect in a manner like alternating current the change in the magnetic flux in the magnetic circuit caused by the operation of the diaphragm.
摘要翻译： 一种用于感测在内燃机中发生爆震的爆震感测装置。 该装置包括适于响应于在发动机中循环的冷却水的压力而工作的隔膜，磁力发生装置，包括隔膜的磁路以及适于以类似交流电的方式检测的磁通量检测装置， 在磁路中的磁通量由隔膜的操作引起。
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公开(公告)号：US20180120865A1
公开(公告)日：2018-05-03
申请号：US15339561
申请日：2016-10-31
CPC分类号： G05D7/0676 , E21B34/02 , E21B43/12 , G01F1/30 , G01H3/04 , G01H3/10 , G01H11/00 , G01H11/02 , G01H11/04 , G01H11/08 , G01N15/02 , G01N15/06 , G01N29/046 , G01N29/14 , G01N29/4427 , G01N29/4436 , G01N2015/0053 , G01N2291/02408 , G01N2291/02416 , G01N2291/02836 , G05B15/02
摘要： A solids detector may include a receptor configured to extend at least partially into a flow path of a fluid through a conduit. Further, the solids detector may include a sensor configured to receive an acoustic wave generated due to one or more solid particles in the fluid impacting the receptor. Additionally, the sensor may be configured to generate an electrical signal based on the acoustic wave. The electrical signal may be indicative of one or more impact energies of the one or more solid particles that impacted the receptor.
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公开(公告)号：US20170146393A1
公开(公告)日：2017-05-25
申请号：US15427470
申请日：2017-02-08
发明人： Kenji OTSU , Hideaki FUKUZAWA , Michiko HARA , Tomio ONO
CPC分类号： G01H11/02 , G01B7/24 , G01N29/12 , G01N29/14 , G01N29/245 , G01N29/28 , G01N2291/0234 , G01N2291/0238 , G01N2291/0258
摘要： According to one embodiment, an acoustic sensor includes a base and a first strain sensing element. The base includes a support and a first film unit supported by the support. The first film unit is flexible. The first strain sensing element is provided on a first surface of the first film unit. The first strain sensing element includes a first magnetic layer, a second magnetic layer, and a first intermediate layer provided between the first magnetic layer and the second magnetic layer. An angle between a magnetization of the first magnetic layer and a magnetization of the second magnetic layer is variable by an acoustic wave. The acoustic wave is transmitted to a first film unit by a first transmitting material in contact with the first film unit.
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公开(公告)号：US09536509B2
公开(公告)日：2017-01-03
申请号：US14866169
申请日：2015-09-25
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： As part of a system, a device is provided as part of a system, the device being for capturing vibrations produced by an object such as a musical instrument. The device has a first sensor placed in contact with a surface of the drum, such as a rim of the drum, and a second sensor placed at a fixed location relative to the drum, but not touching the drum. A method may be provided for interpreting the output of the sensors within the system, the method comprising identifying the onset of an audio event in audio data, selecting a window in the data for analysis, applying transforms to generate a representation of the audio event, and comparing that representation to expected representations in a model.
摘要翻译： 作为系统的一部分，设备被提供作为系统的一部分，该设备用于捕获由诸如乐器的对象产生的振动。 该装置具有与鼓的表面（例如鼓的边缘）接触的第一传感器，以及相对于滚筒放置在固定位置但不接触滚筒的第二传感器。 可以提供用于解释系统内的传感器的输出的方法，所述方法包括识别音频数据中的音频事件的开始，在数据中选择用于分析的窗口，应用变换以生成音频事件的表示， 并将该表示与模型中的预期表示进行比较。
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28.发明授权Long-period vibration sensor and method for correcting output value of the long-period vibration sensor 有权长周期振动传感器及校正长周期振动传感器输出值的方法公开(公告)号：US09140822B2
公开(公告)日：2015-09-22
申请号：US13560358
申请日：2012-07-27
摘要： A long-period vibration sensor includes an overdamped accelerometer including a magnet fixed to the inside of a casing, a detection coil disposed between magnetic poles formed due to the magnet, a bobbin configured to hold the detection coil, and a support spring configured to support the bobbin in the casing so that the bobbin can vibrate in a predetermined direction, a voltage being outputted from the detection coil when the bobbin is damped, a plurality of digital filters having different frequency characteristics from one another, a selection module configured to select one digital filter from the plurality of digital filters based on an output value of the voltage outputted from the overdamped accelerometer, and a correction module configured to correct the output value of the voltage outputted from the overdamped accelerometer using the digital filter selected by the selection module.
摘要翻译： 长周期振动传感器包括：超阻尼加速度计，其包括固定在壳体内部的磁体，设置在由磁体形成的磁极之间的检测线圈;构造成保持检测线圈的线轴;以及支撑弹簧，其构造成支撑 所述筒管在所述壳体中使得所述筒管能够沿预定方向振动，当所述筒管被阻尼时从所述检测线圈输出的电压，具有彼此具有不同频率特性的多个数字滤波器，所述选择模块被配置为选择一个 基于从过阻尼加速度计输出的电压的输出值，从多个数字滤波器输出的数字滤波器;以及校正模块，被配置为使用由选择模块选择的数字滤波器来校正从过阻尼加速度计输出的电压的输出值。
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公开(公告)号：US08487626B2
公开(公告)日：2013-07-16
申请号：US13225284
申请日：2011-09-02
IPC分类号： G01V3/00
CPC分类号： G01V11/005 , E21B47/011 , G01H1/00 , G01H11/02 , G01V11/002 , G01V2200/16
摘要： A sensor assembly for sensing downhole parameters is provided. The sensor assembly is positionable in a downhole tool deployable into a subterranean formation to form a wellbore. The sensor assembly includes a carrier positionable in the downhole tool, at least one set of three accelerometers, and at least one set of three magnetometers. The carrier includes at least one set of three receptacles. The three receptacles are positioned radially about a periphery of the carrier at equal distances thereabout. The set of three accelerometers are correspondingly positionable in the at least one set of three receptacles, and the set of three magnetometers are correspondingly positionable in the at least one set of three receptacles. The set of three magnetometers includes two physical magnetometers and one virtual magnetometer. The virtual magnetometer is produced from the two physical magnetometers.
摘要翻译： 提供了一种用于感测井下参数的传感器组件。 传感器组件可定位在可部署到地下地层中的井下工具中以形成井眼。 传感器组件包括可定位在井下工具中的载体，至少一组三个加速度计和至少一组三个磁力计。 载体包括至少一组三个容器。 三个容器围绕载体的周边径向地定位在其周围相等的距离处。 该组三个加速度计相应地可定位在至少一组三个容器中，并且三组磁力计的组可相应地定位在至少一组三个容器中。 该组三个磁力计包括两个物理磁力计和一个虚拟磁力计。 虚拟磁力计由两个物理磁力计产生。
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公开(公告)号：US20110255731A1
公开(公告)日：2011-10-20
申请号：US13086841
申请日：2011-04-14
申请人： Geoffrey R. Ball
发明人： Geoffrey R. Ball
CPC分类号： A61B5/6817 , A61B5/11 , A61B5/12 , A61B5/121 , A61B2562/0223 , B06B1/045 , G01H11/02 , H04R11/04 , H04R25/606 , H04R2209/041
摘要： An electro-magnetic transducer assembly includes a first component. The first component includes at least one magnet, and optionally a first attachment mechanism for attaching the first component to a vibrating structure. A coil assembly includes a second attachment mechanism for removably attaching the coil assembly to the first component. The coil assembly further includes at least one coil that produces a signal representative of the vibration of the at least one magnet. An output port provides the signal.
摘要翻译： 电磁换能器组件包括第一部件。 第一部件包括至少一个磁体，以及可选地用于将第一部件附接到振动结构的第一连接机构。 线圈组件包括用于将线圈组件可移除地附接到第一部件的第二附接机构。 线圈组件还包括产生代表至少一个磁体的振动的信号的至少一个线圈。 输出端口提供信号。
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