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1.发明申请公开(公告)号：US20170030189A1
公开(公告)日：2017-02-02
申请号：US15113180
申请日：2015-01-26
发明人： Yogesh GIANCHANDANI , Scott GREEN , Kamal SARABANDI , Mazen KANJ , Howard SCHMIDT , Jun TANG , Jiangfeng WU
IPC分类号： E21B49/00 , G01V3/08 , E21B43/267
CPC分类号： E21B49/00 , E21B43/26 , E21B43/267 , G01V3/081 , G01V3/38
摘要： A fracture interrogation system includes an antenna adapted for placement in a subterranean wellbore and a plurality of pseudoparticles adapted for distribution with a proppant material into hydraulic fractures along the wellbore. The presence of the pseudoparticles in the hydraulic fractures is detectable by the antenna. The pseudoparticles can include a magnetoelastic resonator having a resonant frequency. An interrogation field excites the resonators at the resonant frequency for detection by the antenna. The same or a different antenna can act as the interrogation field source, and the system can be configured to operate in a talk-and-listen mode to better separate the response signal from the interrogation signal. Electromagnetic, mechanical, or acoustic impulses can be used to excite resonators of the pseudoparticles.
摘要翻译： 断裂询问系统包括适于放置在地下井眼中的天线和适于与支撑剂材料一起分布的多个伪颗粒沿着井筒进行水力裂缝。 水力裂缝中伪颗粒的存在可由天线检测。 假颗粒可以包括具有共振频率的磁弹性共振器。 询问场以谐振频率激发谐振器，用于由天线检测。 相同或不同的天线可以用作询问场源，并且系统可以被配置为以谈话和听听模式操作以更好地将响应信号与询问信号分离。 电磁，机械或声学脉冲可用于激发伪颗粒的共振器。
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公开(公告)号：US20230404427A1
公开(公告)日：2023-12-21
申请号：US18210980
申请日：2023-06-16
发明人： Duxin SUN , Yogesh GIANCHANDANI , Tao LI , Jeremy FELTON , Hsueh-Tsung LU , Alexander BENKEN , Partha DUTTA , Xiangyu ZHAO , Manjunath PAI
CPC分类号： A61B5/067 , A61B5/6861 , A61B5/4839 , A61B5/073 , A61B2010/0061
摘要： A method is presented for tracking an ingestible device in a gastrointestinal tract of a subject. The method includes: measuring acceleration of the ingestible device as it traverses through the gastrointestinal tract, for example using an accelerometer disposed in the ingestible device; computing a metric from the acceleration measurements obtained by the accelerometer over a given period of time; and identifying a location in the gastrointestinal tract based in part on the metric.
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公开(公告)号：US20170023652A1
公开(公告)日：2017-01-26
申请号：US15113178
申请日：2015-01-23
发明人： Yogesh GIANCHANDANI , Jun TANG , Scott GREEN
IPC分类号： G01R33/18 , G01L1/12 , G01R33/038
CPC分类号： G01R33/18 , G01L1/125 , G01R33/0385 , G01R33/04 , G01R33/063
摘要： A magnetoelastic tag includes a frame-suspended magnetoelastic resonator that combines a strong resonant response with a relatively small resonator, enabling magnetoelastic sensor use in a variety of inconspicuous applications and/or small packages. The resonator is suspended with respect to a substrate, which reduces, minimizes, or eliminates interaction between the substrate and resonator. Signal strength is thereby enhanced, thereby allowing miniaturization while maintaining a measurable response to the interrogation field. The resonator can have a hexagonal shape and/or be suspended at particular locations about its perimeter to promote signal generation in a direction different from that of the interrogation field. A sensor can include one or more frame-suspended resonators, which can be arranged in an array, stacked, or randomly where a plurality of resonators is employed.
摘要翻译： 磁弹性标签包括框架悬挂的磁弹性谐振器，其将强谐振响应与相对小的谐振器相结合，使得磁弹性传感器能够用于各种不显眼的应用和/或小封装。 谐振器相对于衬底悬挂，其减小，最小化或消除衬底和谐振器之间的相互作用。 从而增强信号强度，从而允许小型化，同时保持对询问场的可测量的响应。 谐振器可以具有六边形形状和/或悬挂在围绕其周边的特定位置，以促进在与询问场不同的方向产生信号。 传感器可以包括一个或多个框架悬挂的谐振器，其可以布置成阵列，堆叠或随机地使用多个谐振器。
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公开(公告)号：US20160138991A1
公开(公告)日：2016-05-19
申请号：US14899632
申请日：2014-06-20
发明人： Yogesh GIANCHANDANI , Christine EUN , Xin LUO , Mark KUSHNER , Zhongmin XIONG , Jun-Chieh WANG
CPC分类号： G01L9/0072 , E21B47/06 , G01L9/0042 , G01L9/0051 , G01L9/0073
摘要： The distance between microscale electrodes can be determined from microdischarge current and/or capacitance distribution among a plurality of electrodes. A microdischarge-based pressure sensor includes a reference pair of electrodes on a body of the sensor and a sensing pair of electrodes. One of the electrodes of the sensing pair is on a diaphragm of the sensor so that the distance between the sensing pair of electrodes changes with diaphragm movement, while the distance between the reference pair does not. Plasma and current distribution within a microdischarge chamber of the sensor is sensitive to very small diaphragm deflections. Pressure sensors can be fabricated smaller than ever before, with useful signals from 50 micron diaphragms spaced only 3 microns from the sensor body. The microdischarge-based sensor is capable of operating in harsh environments and can be fabricated along-side similarly configured capacitive sensors.
摘要翻译： 微电极之间的距离可以由多个电极之间的微放电电流和/或电容分布来确定。 基于微放电的压力传感器包括在传感器的主体上的参考电极对和感测对电极。 感测对中的一个电极位于传感器的隔膜上，使得感测对电极之间的距离随隔膜移动而改变，而参考对之间的距离不变。 传感器的微放电室内的等离子体和电流分布对非常小的膜片偏转敏感。 压力传感器的制造可比以往任何时候都小，距离传感器主体距离仅有3微米的50微米隔膜有用的信号。 基于微放电的传感器能够在恶劣的环境中工作，并且可以沿着类似配置的电容传感器制造。
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公开(公告)号：US20180177638A1
公开(公告)日：2018-06-28
申请号：US15739625
申请日：2016-06-24
CPC分类号： A61F9/00781 , A61F2250/0013 , A61M27/002
摘要： An implantable actuation device that may be used with a glaucoma drainage device or attached to an ocular surface, a method of making an implantable actuation device, and a method of preventing cell adhesion resulting from a glaucoma treatment procedure. The implantable actuation device is made from a magnetoelastic material. Actuation of the magnetoelastic material may help control cellular adhesion that may develop and undesirably disrupt proper healing when recovering from invasive surgical treatments. The implantable actuation devices may have small form factors and customized geometries which include three-dimensional curvatures to help promote the actuation of liquid flow and facilitate the removal of unwanted cells.
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公开(公告)号：US20170205533A1
公开(公告)日：2017-07-20
申请号：US15410724
申请日：2017-01-19
发明人： Tao LI , Yogesh GIANCHANDANI , Yu SUI , Ryan MEREDITH
CPC分类号： G01V11/002
摘要： An environmental logging system that includes a housing and an electronic logging circuit sealed within the housing. The logging circuit includes an energy source, transducer, charging circuit, trigger circuit, electronic control unit (ECU), and transmitter. The energy source is charged by the charging circuit using electricity from the transducer in response to external energy applied to the transducer. Commands may also be received by the circuit via the transducer. The ECU includes a processor, memory, and one or more sensors, and it operates under power from the energy source to store data from the sensor(s). The transmitter is coupled to the ECU and transmits the data via electromagnetic radiation outside the housing. The trigger circuit supplies operating power to the processor only when the voltage level of the energy source is above a minimum threshold. The housing may be a tubular shell filled with a polymeric material.
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公开(公告)号：US20170174506A1
公开(公告)日：2017-06-22
申请号：US15127237
申请日：2015-03-17
发明人： Yogesh GIANCHANDANI , Tao LI , Yushu MA
IPC分类号： B81B7/00 , H01L23/053 , H01L23/043 , B81B7/02 , B81C3/00
CPC分类号： B81B7/0048 , B81B7/0032 , B81B7/0045 , B81B7/02 , B81B2201/0264 , B81C3/00 , B81C3/002 , B81C3/004 , H01L23/043 , H01L23/053
摘要： A sub-millimeter packaged microsystem includes a microsystem located in a sealed cavity defined between first and second portions of a micropackage. One or both micropackage portions can be fabricated from a metal suitable for use in a harsh environment, such as an oil well environment. The microsystem includes electronic components and can be configured to communicate with external components through a wall of the micropackage by wireless communication or by conductive feedthroughs. Pluralities of microsystems, first micropackage portions, and/or second micropackage portions are simultaneously placed during a batch assembly process. The assembly process may include micro-crimping the first and second micropackaging portions together without the need for bonding materials and related process steps.
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