公开(公告)号：AU2011235600A1

公开(公告)日：2012-10-11

申请号：AU2011235600

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：AU2006299729B2

公开(公告)日：2011-07-28

申请号：AU2006299729

申请日：2006-08-31

Applicant: TECH RESOURCES PTY LTD

Inventor： WINTERFLOOD JOHN ,  MANN ANTHONY GORDON ,  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：NZ560702A

公开(公告)日：2011-02-25

申请号：NZ56070206

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 gravitational gradient tensor. The gradiometer comprises a sensor (40) for measuring the components of the gradient tensor and a mounting for supporting the sensor. The mounting comprises; a first mount, a second mount, and connectors. The first mount (10) has a base, a cylindrical hub protruding from the base, a peripheral wall (14) disposed around and spaced from the hub and provided with a plurality of circumferentially spaced cutouts (16), and a central core coaxial with the hub and attached to the hub by a first flexure web to provide for relative rotation between the core and base about a first axis. The second mount fits within the peripheral wall of the first mount and has first, second and third parts. The first and second parts connect via a second flexure web for relative rotation about a second axis orthogonal to the first axis. The second and third parts connect by a third flexure web for relative rotation about a third axis orthogonal to the first and second axes. The connectors (13) extend outwardly from the first part of the second mount through the cutouts in the peripheral wall of the first mount for connecting the mounting to an external platform. The third part of the second mount is attached to the core of the first mount and the sensor is connected to the base of the first mount. Hence the sensor is rotatable with the base of the first mount about all three orthogonal axes.

公开(公告)号：NZ560699A

公开(公告)日：2011-02-25

申请号：NZ56069906

申请日：2006-08-31

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN ,  MANN ANTHONY GORDON

IPC: G01V7/16

Abstract: Disclosed is a system for measuring a gravity gradient tensor. The system comprises of: a gravity gradient sensor (40) with a pair of transversely arranged masses (41, 42) for use in a gravity gradiometer for measuring components of a gravity gradient tensor; a calibration sensor for sensing, at room temperature prior to cryogenic operation of the gravity gradiometer, whether one of the pair of masses associated with the calibration sensor is balanced; and an adjusting mechanism for adjusting the balance of the masses at room temperature prior to cryogenic operation of the gravity gradiometer. The calibration sensor comprises a resonant circuit having an inductor, and a capacitor which has a first plate formed by a surface of one of the masses and a second plate spaced from that surface of one of the masses; and an oscillator for receiving a signal from the resonant circuit and for producing an output signal indicative of the spacing between the first plate and the second plate. In use the calibration sensor produces a signal indicative of the balance of the one of the pair of masses associated with the calibration sensor.

公开(公告)号：AP2183A

公开(公告)日：2010-11-30

申请号：AP2007004129

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：CA2729568A1

公开(公告)日：2010-04-01

申请号：CA2729568

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 which comprises a component comprising a detector for generating a signal in response to a change in gravity gradient experienced by the gravity gradiometer. The gravity gradiometer also comprises a support structure for supporting the component in a manner such that the component is movable relative to the support structure. Further, the gravity gradiometer comprises an acceleration sensor for sensing an acceleration associated with an external acceleration when the gravity gradiometer is exposed to the external acceleration. In addition, the gravity gradiometer comprises an actuator for generating a force on the component as a function of both an acceleration sensed by the acceleration sensor and a response parameter associated with the component. The actuator is arranged to apply a generated force such that transmission of the acceleration from the support structure to the component is reduced.

公开(公告)号：EA012274B1

公开(公告)日：2009-08-28

申请号：EA200701548

申请日：2006-08-31

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN ,  MANN ANTHONY GORDON

IPC: G01V7/16

Abstract: Раскрытгравитационныйградиентометр, которыйимеетдатчикв формебрусков (41 и 42), которыеустановленынаустановочномустройстве (5), котороеимеетпервуюустановочнуюсекцию (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：AR062670A1

公开(公告)日：2008-11-26

申请号：ARP070103927

申请日：2007-09-06

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/00

Abstract: Se da a conocer un gradiometro de gravedad que comprende un par de masas sensoras 41, 43 dispuestas en carcasas 45, 47. Se proveen transductores 71 para medir el movimiento de las masas sensoras en respuesta al tensor del gradiente de gravedad. Las masas están soportadas por un esfuerzo flexural 59 para permitir su movimiento entre la masa y un soporte, y un tope que comprende un par de superficies de tope 554, 555 y 558, 559 definidos por un corte 500 [que] impiden el movimiento de las masas sensoras 41, 43 más alla del límite elástico del refuerzo flexural 59.

公开(公告)号：AR062668A1

公开(公告)日：2008-11-26

申请号：ARP070103925

申请日：2007-09-06

Applicant: TECH RESOURCES PTY LTD

Inventor： WINTERFLOOD JOHN ,  VAN KANN FRANK JOACHIM

IPC: G01V7/00

Abstract: Se da a conocer un gradiometro que tiene un par de barras sensoras 41 y 43 apoyadas en las carcasas 45 y 47. Los transductores 71 están ubicados adyacentes a las barras 41 y 43 para detectar el movimiento de las barras en respuesta al tensor del gradiente gravitacional. Al menos uno de los transductores 71 comprende una primera bobina 510 y una segunda bobina 516 dispuesta en forma paralela y un interruptor 362 para suministrar corriente entre las bobinas 510 y 516, a fin de crear una bobina virtual en una posicion D entre las bobinas 510 y 516.

公开(公告)号：PE20080964A1

公开(公告)日：2008-07-10

申请号：PE2007001302

申请日：2007-09-27

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM

IPC: G01V7/00 ,  G01V7/16

Abstract: QUE COMPRENDE: a) POR LO MENOS UNA MASA SENSORA PARA EL MOVIMIENTO EN RESPUESTA AL GRADIENTE DE GRAVEDAD; b) UN ACOPLAMIENTO DE PIVOTE QUE PERMITE EL MOVIMIENTO DE (a) ALREDEDOR DE UN EJE; c) UNA UNIDAD DE SENSOR Y ACTUADOR PARA GENERAR UNA SENAL ELECTRICA EN RESPUESTA AL MOVIMIENTO DE (a) Y PARA EJERCER INFLUENCIA EN EL MOVIMIENTO DE (a); Y, d) UN CIRCUITO ELECTRONICO PARA SIMULAR UNA IMPEDANCIA, DISPUESTO PARA AMPLIFICAR LA SENAL ELECTRICA RECIBIDA DESDE (c) Y PARA DIRIGIR UNA SENAL ACTUADORA A (c). (d) CONSISTE DE: i) UN AMPLIFICADOR DIFERENCIAL QUE TIENE UN PRIMER Y SEGUNDO TERMINALES DE ENTRADA Y UN TERMINAL DE SALIDA; ii) UN TERMINAL DE REFERENCIA; Y, iii) LAS IMPEDANCIAS Z1, Z2 Y Z3, DONDE AL MENOS UNA DE ELLAS TIENE UN COMPONENTE DE IMPEDANCIA IMAGINARIO. EL PRIMER Y SEGUNDO TERMINALES DE ENTRADA ESTAN ACOPLADOS, RESPECTIVAMENTE, POR LAS IMPEDANCIAS Z1 Y Z2; Y EL TERMINAL SE SALIDA ESTA ACOPLADO A (ii) POR Z3, SEGUN LO CUAL SE SIMULA IMPEDANCIA DE -Z1*Z3/Z2 QUE TIENE UN COMPONENTE REAL (OHMICO) Y UNO IMAGINARIO, DONDE EL COMPONENTE REAL AMORTIGUA LA OSCILACION RESONANTE DE (a) POR MEDIO DEL ACTUADOR DE (c). Z1, Z2 Y Z3 INCLUYE UNA RESISTENCIA QUE SE ACOPLA EN PARALELO CON AL MENOS UN CAPACITOR