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公开(公告)号：US20080115578A1
公开(公告)日：2008-05-22
申请号：US11851872
申请日：2007-09-07
CPC分类号： G01V7/04
摘要： The present invention provides a gravity gradiometer which comprises at least one sensor mass suspended by a coupling which enables movement of the at least one sensor mass about an axis in response to a gravity gradient. Further, the gravity gradiometer comprises at least one transducer for generating an electrical signal in response to the movement of the at least one sensor mass relative to a component of the transducer and for influencing the movement of the at least one sensor mass. The gravity gradiometer also comprises electrical circuitry for receiving the electrical signal from the at least one transducer and for directing an actuating signal to the at least one transducer so that in use the at least one transducer functions as sensor and actuator.
摘要翻译： 本发明提供了一种重力梯度计，其包括至少一个传感器质量块，该传感器质量块通过联接器悬挂，其能够响应于重力梯度使所述至少一个传感器质量块绕轴线移动。 此外，重力梯度计包括至少一个换能器，用于响应于至少一个传感器质量相对于换能器的部件的移动而产生电信号，并且用于影响至少一个传感器质量块的运动。 重力梯度计还包括用于从至少一个换能器接收电信号并用于将致动信号引导到至少一个换能器的电路，使得在使用中至少一个换能器用作传感器和致动器。
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公开(公告)号：US08074515B2
公开(公告)日：2011-12-13
申请号：US12714634
申请日：2010-03-01
IPC分类号： G01V7/00
CPC分类号： G01V7/16
摘要： A gravity gradiometer is disclosed which has a sensor in the form of bars (41 and 42) which are supported on a mounting (5) which has a first mount section (10) and a second mount section (20). A first flexure web (33) pivotally couples the first and second mount sections about a first axis. The second mount has a first part (25), a second part (26) and a third part (27). The parts (25 and 26) are connected by a second flexure web (37) and the parts (26 and 27) are connected by a third flexure web (35). The bars (41 and 42) are located in housings (45 and 47) and form a monolithic structure with the housings (45 and 47) respectively. The housings (45 and 47) are connected to opposite sides of the second mount section 20. The bars (41 and 42) are connected to their respective housings by flexure webs (59). Transducers (71) are located in proximity to the bars for detecting movement of the bars to in turn enable the gravitational gradient tensor to be measured.
摘要翻译： 公开了一种重力梯度计，其具有杆（41和42）形式的传感器，所述传感器支撑在具有第一安装部分（10）和第二安装部分（20）的安装件（5）上。 第一弯曲腹板（33）围绕第一轴线枢转地联接第一和第二安装部分。 第二安装件具有第一部分（25），第二部分（26）和第三部分（27）。 部分（25和26）通过第二弯曲腹板（37）连接，并且部件（26和27）通过第三弯曲腹板（35）连接。 杆（41和42）位于壳体（45和47）中并且分别与壳体（45和47）形成整体结构。 壳体（45和47）连接到第二安装部分20的相对侧。杆（41和42）通过弯曲腹板（59）连接到它们各自的壳体。 传感器（71）位于杆附近，用于检测杆的移动，从而使得能够测量重力梯度张量。
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公开(公告)号：US20100071462A1
公开(公告)日：2010-03-25
申请号：US12560618
申请日：2009-09-16
IPC分类号： G01V7/00
CPC分类号： G01V7/005
摘要： The present invention provides a method of tuning properties of a gravity gradiometer for measuring components of the gravity gradient tensor. The gravity gradiometer comprises a pair of first and second transversely arranged sensor masses that are arranged for movement about an axis and relative to each other in response to a gravity gradient. The gravity gradiometer further comprises first and second capacitors for sensing and influencing the movement of the first and second sensor masses. The method comprising applying a bias voltage to at least one of the capacitors for generating an electrostatic force which acts on one of the sensor masses and thereby influences the movement of that sensor mass.
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公开(公告)号：US07637153B2
公开(公告)日：2009-12-29
申请号：US11845355
申请日：2007-08-27
IPC分类号： G01V7/00
CPC分类号： G01V7/16
摘要： A gravity gradiometer is disclosed which comprises a pair of sensor masses arranged in housings. Transducers are provided for measuring movement of the sensor masses in response to the gravity gradient tensor. The masses are supported for movement by a flexure web between the mass and a support and a stop comprises a pair of abutment services defined by a cut prevent movement of the sensor masses beyond the elastic limit of the flexure web.
摘要翻译： 公开了一种重力梯度计，其包括布置在壳体中的一对传感器质量。 传感器用于测量传感器质量响应于重力梯度张量的运动。 质量被支撑用于通过质量块和支撑件之间的挠曲网的运动，并且止动件包括由传感器质量超过挠性网的弹性极限的切口阻止运动限定的一对邻接服务。
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公开(公告)号：US07627954B2
公开(公告)日：2009-12-08
申请号：US11845343
申请日：2007-08-27
CPC分类号： G01V7/04
摘要： A gradiometer is disclosed which has a pair of sensor bars 41, 43 supported in housings 45, 47. Transducers 71 are located adjacent the bars 41, 43 to detect movement of the bars in response to the gravity gradient tensor. At least one of the transducers 71 comprises a first coil 510 and a second coil 516 arranged in parallel and a switch 362 for proportioning current between the coils 510 and 516 so as to create a virtual coil at a position D between the coils 510 and 516.
摘要翻译： 公开了一种梯度计，其具有支撑在壳体45,47中的一对传感器杆41,43。传感器71位于杆41,43附近，以响应于重力梯度张量来检测杆的移动。 换能器71中的至少一个包括平行布置的第一线圈510和第二线圈516以及用于在线圈510和516之间配比电流的开关362，以便在线圈510和516之间的位置D处产生虚拟线圈 。
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公开(公告)号：US20090293611A1
公开(公告)日：2009-12-03
申请号：US11845303
申请日：2007-08-27
IPC分类号： G01V7/00
CPC分类号： G01V7/005
摘要： A gravity gradiometer and method for forming a pivot flexure web for a gradiometer is disclosed. The gradiometer has measurement bars 41, 43 supported in housings 45 and 47 and transducers 71 for measuring movement of the bars to provide an indication of the gravity gradient tensor. The bars 41, 43 are mounted on flexure webs. The webs are formed in separate elements to the housing and bars.
摘要翻译： 公开了一种用于形成用于梯度计的枢轴弯曲腹板的重力梯度计和方法。 梯度计具有支撑在壳体45和47中的测量棒41,43和用于测量棒的运动的换能器71，以提供重力梯度张量的指示。 杆41,43安装在弯曲腹板上。 腹板与壳体和杆形成分开的元件。
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公开(公告)号：US07624635B2
公开(公告)日：2009-12-01
申请号：US11845370
申请日：2007-08-27
摘要： A heat switch 570 is disclosed as well as a gradiometer having the heat switch. The heat switch is formed from a non-magnetic material such as a semi-conducting material. The semi-conducting material may be provided by way of a Hall effect device. The heat switches are arranged in the gradiometer on a circuit board 856. The circuit board 850 has conducting strips 856 which are connected to conducting strips on a sensor 71 by bridges 852. The heat switch 570 is connected on the opposite side of the circuit board 850 to the strips 856 and processing circuitry 859. A copper substrate 865 is provided on the same side of the circuit board as the heat switch 570 to conduct heat away from the heat switch 570 when the heat switch is closed.
摘要翻译： 公开了一种热开关570以及具有热开关的梯度计。 热开关由诸如半导体材料的非磁性材料形成。 半导电材料可以通过霍尔效应器件提供。 热交换器布置在电路板856上的梯度计中。电路板850具有导电带856，其通过桥接器852连接到传感器71上的导电条。热开关570连接在电路板的相对侧上 850到条带856和处理电路859.铜基板865设置在电路板的与热开关570相同的一侧上，以在热开关闭合时将热量从热开关570导出。
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公开(公告)号：US20080121035A1
公开(公告)日：2008-05-29
申请号：US11845323
申请日：2007-08-27
IPC分类号： G01V7/16
CPC分类号： G01V7/04
摘要： A gravity gradiometer is disclosed which has a pair of sensor bars 41, 42 mounted in housings 43 and 45. Transducers 71 are located adjacent the bars for measuring movement of the bars in response to the gravity gradient tensor. Signals from the transducers are supplied to a SQUID device 367 for processing the signals. A connector is supplied for connecting the circuitry to external equipment which comprises a container 560 having a feed through filter 564, a three terminal cap 565, a relay 566 and an output terminal. The output terminal is connected to further RF attenuation which comprises a second connector 5b having parallel inductors and resistors.
摘要翻译： 公开了一种重力梯度计，其具有安装在壳体43和45中的一对传感器杆41,42。 传感器71位于杆附近，用于响应于重力梯度张量来测量杆的运动。 来自换能器的信号被提供给用于处理信号的SQUID装置367。 提供一个用于将电路连接到外部设备的连接器，其包括具有通过过滤器564的馈送的容器560，三端子帽565，继电器566和输出端子。 输出端子连接到另外的RF衰减，其包括具有并联电感器和电阻器的第二连接器5b。
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公开(公告)号：US20230384342A1
公开(公告)日：2023-11-30
申请号：US18230348
申请日：2023-08-04
IPC分类号： G01P15/125 , G01V7/04
CPC分类号： G01P15/125 , G01V7/04
摘要： A capacitance sensing assembly is provided. The capacitance sensing assembly includes an op-amp arranged with four complex impedance circuits and a sensing capacitor connected to the fourth complex impedance circuit and ground; or to the non-inverting input of the op-amp, the fourth complex impedance circuit, ground and the second terminal of the fourth complex impedance circuit, wherein the fourth complex impedance circuit is connected in parallel to the sensing capacitor. The complex impedance circuits are configured to increase a gradient of a phase to frequency response curve of the capacitance sensing assembly relative to that of an all-pass filter with a second electrode of a capacitor connected to the non-inverting input of the op-amp and the ground without the fourth complex impedance circuit.
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公开(公告)号：US08033170B2
公开(公告)日：2011-10-11
申请号：US12560618
申请日：2009-09-16
IPC分类号： G01V7/00
CPC分类号： G01V7/005
摘要： The present invention provides a method of tuning properties of a gravity gradiometer for measuring components of the gravity gradient tensor. The gravity gradiometer comprises a pair of first and second transversely arranged sensor masses that are arranged for movement about an axis and relative to each other in response to a gravity gradient. The gravity gradiometer further comprises first and second capacitors for sensing and influencing the movement of the first and second sensor masses. The method comprising applying a bias voltage to at least one of the capacitors for generating an electrostatic force which acts on one of the sensor masses and thereby influences the movement of that sensor mass.
摘要翻译： 本发明提供了一种用于测量重力梯度张量的分量的重力梯度计的性质的方法。 重力梯度计包括一对第一和第二横向布置的传感器质量块，其布置成响应于重力梯度围绕轴线相对于彼此运动。 重力梯度仪还包括用于感测和影响第一和第二传感器质量块的运动的第一和第二电容器。 该方法包括向至少一个电容器施加偏置电压以产生作用在传感器质量之一上的静电力，从而影响该传感器质量块的移动。
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