公开(公告)号：CA2612568C

公开(公告)日：2015-05-19

申请号：CA2612568

申请日：2007-08-17

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/08 ,  G01V7/16

Abstract: 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.

公开(公告)号：CA2794375A1

公开(公告)日：2011-10-06

申请号：CA2794375

申请日：2011-03-29

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM

IPC: G01V7/16

Abstract: The present disclosure provides a method of detecting a change in gravity gradient using a gravity gradiometer. The gravity gradiometer comprises a detector for detecting the change in gravity gradient. The gravity gradiometer further comprises a sensor for generating a disturbance signal in response to an external disturbance. The method comprises the steps of exposing the gravity gradiometer to the external disturbance during operation of the gravity gradiometer. Further, the method comprises the steps of detecting the disturbance signal and receiving an output signal from the detector of the gravity gradiometer. The method also comprises the step of numerically correcting the output signal for an impact that a component of the gravity gradiometer experiences, as a consequence of the external disturbance using a response parameter that associates the external disturbance with a disturbance experienced by that component.

公开(公告)号：AU2006299728B2

公开(公告)日：2011-07-28

申请号：AU2006299728

申请日：2006-08-31

Applicant: TECH RESOURCES PTY LTD

Inventor： WINTERFLOOD JOHN ,  VAN KANN FRANK JOACHIM

IPC: G01V7/16

Abstract: 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 first axis. The second mount has first part (25), a second part (26) and a third part (27). The parts (25 and 26) are connected by second flexure web (37) and the parts (26 and 27) are connected by 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).

公开(公告)号：BRPI0702878A2

公开(公告)日：2011-03-22

申请号：BRPI0702878

申请日：2007-08-17

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/00 ,  G01V7/10

Abstract: 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.

公开(公告)号：NZ560701A

公开(公告)日：2011-02-25

申请号：NZ56070106

申请日：2006-08-31

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/16

Abstract: Disclosed is a gravity gradiometer for measuring components of a gravity gradient tensor. The gradiometer comprises: a sensor (41, 42) for measuring the components of the gravity gradient tensor; and a mounting (5) for providing rotation about three substantially orthogonal axes, and for supporting the sensor. The sensor comprises a first mass (41) and a second mass (42) supported within respective first and second housings for movements relative to the housings in response to the gravitational field. The mounting comprises: a first mount (10); a second mount; and a first flexure web (33) for pivotally coupling the first and second mounts for pivotal movement about a first axis. The second mount has a first part (25), a second part (26) and a third part (27). The first part connects to the second part by a second flexure web (37) for pivotally coupling the first part to the second part for pivotal movement about a second axis orthogonal to the first axis. The third part is coupled to the second part by a third flexure web (35) for pivotally coupling the third part to the second part for pivotal movement about a third axis orthogonal to the first and second axes.

公开(公告)号：AP2161A

公开(公告)日：2010-11-01

申请号：AP2007004132

申请日：2006-08-31

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/16

Abstract: 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.

公开(公告)号：CA2729571A1

公开(公告)日：2010-04-01

申请号：CA2729571

申请日：2009-09-25

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM

IPC: G01V7/16

Abstract: The present disclosure provides a gravity gradiometer that comprises a detector for detecting a gravity gradient. The detector comprises at least one movable sensing element and that is arranged to generate a signal in response to a change in gravity gradient. The gravity gradiometer also comprises a support structure for supporting the detector in an aircraft and a component that is arranged to reduce transmission of an aircraft acceleration to the detector. The at least one movable sensing element and the support structure together are arranged to reduce an influence of the aircraft acceleration on the signal by a factor of at least 107 when the gravity gradiometer is airborne and exposed to the aircraft acceleration.

公开(公告)号：CA2729570A1

公开(公告)日：2010-04-01

申请号：CA2729570

申请日：2009-09-25

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM

IPC: G01V7/02

Abstract: The present disclosure provides a gravity gradiometer for detecting a gravity gradient. The gravity gradiometer comprises at least two sensor masses that are pivotable about respective axes and each experience a change in torque in response to a change in gravity gradient whereby the at least two sensor masses move relative to each other in response to the change in gravity gradient and wherein a signal indicative of the gravity gradient is generated in response to the relative movement of the at least two sensor masses. Further, the gravity gradiometer comprises an acceleration sensor for sensing an acceleration associated with an external acceleration applied to the gravity gradiometer. The gravity gradiometer also comprises an actuator for generating an adjustment force that is dependent on an acceleration sensed by the acceleration senor. The adjustment force is also dependent on a mechanical response parameter associated with at least one of the at least two sensor masses. The adjustment force is applied such that a difference between the magnitudes of the torques experienced by the at least two senor masses in response to the change in gravity gradient is reduced.

公开(公告)号：EA012913B1

公开(公告)日：2010-02-26

申请号：EA200701550

申请日：2006-08-31

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/16

Abstract: Раскрытгравитационныйградиентометр, которыйимеетдатчикв формебрусков (41 и 42), которыеустановленынаустановочномустройстве (5), которыйимеетпервуюустановочнуюсекцию (10) ивторуюустановочнуюсекцию (20). Перваягибкаяперемычка (33) шарнирносоединяетпервуюи вторуюустановочныесекциивокругпервойоси. Второйустановочныйузелимеетпервуючасть (25), вторуючасть (26) итретьючасть (27). Части (25 и 26) соединенывторойгибкойперемычкой (37), ичасти (26 и 27) соединенытретьейгибкойперемычкой (35). Бруски (41 и 42) установленыв корпусах (45 и 47) иформируютмонолитнуюструктурус корпусами (45 и 47) соответственно. Корпуса (45 и 47) соединеныс противоположнымисторонамивторойустановочнойсекции 20. Бруски (41 и 42) соединенысосвоимисоответствующимикорпусамис помощьюгибкихперемычек (59).

公开(公告)号：EA012192B1

公开(公告)日：2009-08-28

申请号：EA200701549

申请日：2006-08-31

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/16

Abstract: Раскрытгравитационныйградиентометр, которыйимеетдатчикв формебрусков (41 и 42), которыеустановленынаустановочномустройстве (5), которыйимеетпервуюустановочнуюсекцию (10) ивторуюустановочнуюсекцию (20). Перваягибкаяперемычка (33) шарнирносоединяетпервуюи вторуюустановочныесекциивокругпервойоси. Второекреплениеимеетпервуючасть (25), вторуючасть (26) итретьючасть (27). Части (25 и 26) соединенывторойгибкойперемычкой (37), ичасти (26 и 27) соединенытретьейгибкойперемычкой (35). Бруски (41 и 42) установленыв корпусах (45 и 47) иформируютмонолитнуюструктурус корпусами (45 и 47), соответственно. Корпуса (45 и 47) соединеныс противоположнымисторонамивторойустановочнойсекции 20. Бруски (41 и 42) соединенысосвоимисоответствующимикорпусамис помощьюгибкихперемычек (59).