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1. 发明授权

US10802042B2 Measurement of acceleration 有权
公开(公告)号：US10802042B2
公开(公告)日：2020-10-13
申请号：US15506675
申请日：2015-08-26
申请人： The University Court of the University of Glasgow
发明人： Paul Campsie , Giles Dominic Hammond , Richard Paul Middlemiss , Douglas John Paul , Antonio Samarelli
IPC分类号： G01P15/125 , G01P15/13 , G01V7/00 , G01P15/02 , G01V7/02
摘要： An acceleration measuring device is disclosed, for use as a gravimeter or gradiometer for example. The device has a support and a proof mass, connected to each other by at flexures allowing displacement of the proof mass relative to the support. The support defines a space for displacement of the proof mass. The device is configured so that the modulus of the gradient of the force-displacement curve of the proof mass decreases with increasing displacement, for at least part of the force-displacement curve. This is the so-called anti-spring effect. The resonant frequency of oscillation of the proof mass is determined at least in part by the orientation of the device relative to the direction of the force due to gravity. The proof mass is capable of oscillating with a resonant frequency of 10 Hz or less. The proof mass has a mass of less than 1 gram.

2. 发明授权

US10591631B2 Measuring gravity curvature for mapping subterranean formations 有权
公开(公告)号：US10591631B2
公开(公告)日：2020-03-17
申请号：US15512539
申请日：2015-12-08
申请人： HALLIBURTON ENERGY SERVICES, INC.
发明人： Satyan Gopal Bhongale , Michel Joseph Leblanc
IPC分类号： G01V7/04 , G01V7/02 , E21B47/10 , E21B49/00
摘要： Gravity surveys of subterranean formations may be based on the simultaneous measurement of gravity and its derivatives to produce a higher resolution formation map or wellbore log. For example, a method of performing a gravity survey may include positioning a matter wave interferometer relative to a subterranean formation; producing at least one cloud of atoms in the matter wave interferometer; producing a superposition of atoms in two different, spatially separated superimposed clouds from each of the at least one cloud of atoms; propagating the two different, spatially separated superimposed clouds along the matter wave interferometer as they with a gravitational field of the subterranean formation; combining the two different, spatially separated superimposed clouds with a Raman laser beam; measuring an interference produced by producing and combining the two different, spatially separated superimposed clouds; and calculating gravity for the gravitational field of the subterranean formation based on the interference.

3. 发明授权

US10330820B2 System and method for gravimetry without use of an inertial reference 有权
公开(公告)号：US10330820B2
公开(公告)日：2019-06-25
申请号：US14454468
申请日：2014-08-07
申请人： Lockheed Martin Corporation
发明人： Thomas J. Meyer
IPC分类号： G01V7/02 , G01V7/16
摘要： A gravimeter for measuring the gravitational field of the Earth without an inertial reference comprises accelerometer pairs disposed on a platform where the sensitive axis of each accelerometer is arranged on the platform to measure plumb gravity. At least one accelerometer pair is spatially configured to define a baseline therebetween. The gravimeter is positioned so that the baseline is maintained parallel to a linear survey path. Each accelerometer outputs a signal representative of the sum total of the accelerations detected, including accelerations due to gravity and kinematic accelerations of the host vehicle and mounting structure. A processor subtracts the accelerometer pair outputs for common-mode rejection determination of a down gravity gradient and combines with a direct plumb gravity measurement to obtain an enhanced gravity data output that is not subject to frequency limits attributed to the performance limitations of inertial reference devices.

4. 发明授权

US10310132B2 Absolute vector gravimeter and methods of measuring an absolute gravity vector 有权
公开(公告)号：US10310132B2
公开(公告)日：2019-06-04
申请号：US14672808
申请日：2015-03-30
申请人： Gedex Systems Inc.
发明人： Kieran A. Carroll
IPC分类号： G01V7/02 , G01V7/06 , G01V3/18
摘要： An absolute vector gravimeter and method of use is provided. The absolute vector gravimeter includes one or more single axis accelerometers, each capable of pointing in at least two directions and calculating an estimated gravity component. Further embodiments provide for estimating a bias in the single axis accelerometer, as well as measuring non-ballistic accelerations along multiple axes and calculating estimated gravity components for each. A resultant non-ballistic acceleration vector can be calculated. Examples for reducing the RMS error in the estimated gravity components are also provided.

5. 发明授权

US10133172B2 Lens module and projector using the same 有权
公开(公告)号：US10133172B2
公开(公告)日：2018-11-20
申请号：US15658865
申请日：2017-07-25
申请人： Coretronic Corporation
发明人： Chi-Wen Ke , Hung-Wei Lin , Hui-Ju Lin
IPC分类号： G03B21/14 , G03B21/53 , G01V7/02
摘要： A lens module includes a lens, a first gravity sensor and a processor. The lens includes an optical axis and an adjustment assembly. The adjustment assembly rotates around the optical axis. The first gravity sensor is disposed on the adjustment assembly. The adjustment assembly drives the first gravity sensor to rotate. The first gravity sensor is configured to perform detection at different time points. The first gravity sensor generates a first output at a first time point and a second output at a second time point. The processor calculates first and second angles of the first gravity sensor relative to a water level according to the first and second outputs respectively. The processor controls a focus adjustment of the lens according to the first angle and the second angle. A projector employing the aforementioned lens module is also provided.

6. 发明授权

US10048066B2 Control device and method for operating a control device 有权
公开(公告)号：US10048066B2
公开(公告)日：2018-08-14
申请号：US14375076
申请日：2013-02-01
申请人： Robert Bosch GmbH
发明人： Gerhard Lammel , Frederik Wegelin , Martina Foerster
IPC分类号： H01H35/14 , G01B21/22 , G05G1/08 , G01P15/18 , G06F3/0362 , G01V7/02 , H01H3/32 , H01H19/14 , G01C3/08 , G01P15/00
摘要： A control device, in particular for an electrical or electronic device, which has a base element and an actuating element which is manually rotatable in relation to the base element about an actuation axis, the control device further having a sensor unit for detecting a movement of the actuating element about the actuation axis, the sensor unit further including an acceleration sensor.

7. 发明申请

US20170218747A1 DETERMINING EXPECTED SENSOR VALUES FOR DRILLING TO MONITOR THE SENSOR 审中-公开
公开(公告)号：US20170218747A1
公开(公告)日：2017-08-03
申请号：US15501868
申请日：2015-07-30
申请人： Schlumberger Technology Corporation
发明人： Darren Lee Aklestad
IPC分类号： E21B44/00 , E21B47/022 , G01V3/38 , G01V13/00 , G01V3/08 , G06F9/455 , G01V7/02
CPC分类号： E21B44/005 , E21B47/022 , G01V3/08 , G01V3/38 , G01V7/02 , G01V13/00 , G06F9/455
摘要： Aspects of the disclosure can relate to simulating expected sensor values associated with a drill tool (e.g., a drill assembly) before drilling to monitor the sensor. A planned trajectory for the drill assembly is received, where the planned trajectory is associated with a borehole to be drilled by the drill assembly along a geographic path. Next, an expected position for the drill assembly is determined along the geographic path. Then, an expected sensor value for a sensor associated with the drill assembly is simulated at the expected position. Next, an actual sensor value at an actual position corresponding to the expected position is determined. Then, the expected sensor value and the actual sensor value are dynamically displayed together at a user interface.

8. 发明授权

US09696456B2 Method of processing a marine gravity data and a processing apparatus for the same 有权
公开(公告)号：US09696456B2
公开(公告)日：2017-07-04
申请号：US14121038
申请日：2014-07-23
申请人： Korea Institute of Geoscience and Mineral Resources
发明人： Kyong O Kim , Jin Ho Kim , Gee Soo Kong , Moo Hee Kang , Young Ho Yoon
IPC分类号： G01V7/02 , G01V7/06
CPC分类号： G01V7/02 , G01V7/06
摘要： The present invention concerns a method of processing marine gravity data and a processing apparatus for the same. According to the present invention, the processing method comprises obtaining an initial free-air anomaly per profile from raw data; obtaining a filtered free-air anomaly by filtering high-frequency components from the initial free-air anomaly; shifting free-air anomaly by correcting the filtered free-air anomaly based on a reference free-air anomaly; and showing a per-profile free-air anomaly using the reference corrected free-air anomaly.

9. 发明申请

US20160041300A1 SYSTEM AND METHOD FOR GRAVIMETRY WITHOUT USE OF AN INERTIAL REFERENCE 审中-公开
标题翻译：没有使用惯性参考的GRAVIMETRY的系统和方法
公开(公告)号：US20160041300A1
公开(公告)日：2016-02-11
申请号：US14454468
申请日：2014-08-07
申请人： Lockheed Martin Corporation
发明人： Thomas J. Meyer
IPC分类号： G01V7/02
CPC分类号： G01V7/02 , G01V7/16
摘要： A gravimeter for measuring the gravitational field of the Earth without an inertial reference comprises accelerometer pairs disposed on a platform where the sensitive axis of each accelerometer is arranged on the platform to measure plumb gravity. At least one accelerometer pair is spatially configured to define a baseline therebetween. The gravimeter is positioned so that the baseline is maintained parallel to a linear survey path. Each accelerometer outputs a signal representative of the sum total of the accelerations detected, including accelerations due to gravity and kinematic accelerations of the host vehicle and mounting structure. A processor subtracts the accelerometer pair outputs for common-mode rejection determination of a down gravity gradient and combines with a direct plumb gravity measurement to obtain an enhanced gravity data output that is not subject to frequency limits attributed to the performance limitations of inertial reference devices.
摘要翻译：用于测量没有惯性参考的地球的重力场的重力仪包括设置在平台上的加速度计对，其中每个加速度计的灵敏轴被布置在平台上以测量铅垂重力。至少一个加速度计对在空间上被配置为在其间限定基线。重力仪被定位成使得基线保持平行于线性测量路径。每个加速度计输出表示所检测的加速度的总和的信号，包括由于主车辆和安装结构的重力和运动学加速度引起的加速度。一个处理器减去加速度计对输出，用于下行重力梯度的共模抑制确定，并与直接铅锤重力测量相结合，以获得不受惯性参考装置性能限制的频率限制的增强重力数据输出。

10. 发明申请

US20150247949A1 Low-Temperature Superconducting Device for Measuring Gravity 有权
标题翻译：用于测量重力的低温超导装置
公开(公告)号：US20150247949A1
公开(公告)日：2015-09-03
申请号：US14427829
申请日：2013-08-19
申请人： INSTITUTE OF ELECTRICAL ENGINEERING, CHINESE ACADEMY OF SCIENCES
发明人： Xinning Hu , Qiuliang Wang , Chunyan Cui , Hui Wang , Yinming Dai
IPC分类号： G01V7/02 , G01R33/12
CPC分类号： G01V7/02 , G01R33/1238 , G01R33/1261 , G01V7/00
摘要： A low-temperature superconducting device for measuring gravity, includes a low-temperature container, a cryocooler, a rotor chamber, a superconducting rotor, an upper levitation coil, a lower levitation coil, an upper electrode, an intermediate electrode, a lower electrode, a magnetic shielding chamber and a superconducting quantum interference device. By cooling the whole low-temperature superconducting device using a cryocooler, the intermediate electrode disposed in the body of the magnetic shielding chamber will generate an output voltage when the superconducting rotor is displaced due to a change of gravity. Thus, the superconducting quantum interference device can make the superconducting rotor return to the central balance position by adjusting the operating current of the upper levitation coil or the lower levitation coil. A change of gravity can be determined based on the operating current fed back to the upper levitation coil or the lower levitation coil.
摘要翻译：一种用于测量重力的低温超导装置包括低温容器，低温冷却器，转子室，超导转子，上部悬浮线圈，下部悬浮线圈，上部电极，中间电极，下部电极，磁屏蔽室和超导量子干涉装置。通过使用低温冷却器冷却整个低温超导装置，当超导转子由于重力的变化而移动时，设置在磁屏蔽室的主体中的中间电极将产生输出电压。因此，超导量子干涉装置可以通过调节上部悬浮线圈或下部悬浮线圈的工作电流使超导转子返回到中心平衡位置。可以基于反馈到上部悬浮线圈或下部悬浮线圈的工作电流来确定重力变化。

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