G - Physics – 01 – V
Patent
G - Physics
01
V
G01V 7/00 (2006.01) G01V 7/08 (2006.01) G01V 7/16 (2006.01)
Patent
CA 2612677
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.
La présente invention concerne un gradiomètre comportant une paire de tiges de capteurs (41, 43) disposées dans des boîtiers (45, 47). Des transducteurs (71) sont situés adjacents aux tiges (41, 43) pour détecter le déplacement de ces dernières en réaction à un tenseur de gradient gravitique. Au moins un des transducteurs (71) comporte une première bobine (510) et une seconde bobine (516) disposées en parallèle et un commutateur (362) pour doser un courant entre les deux bobines (510) et (516) et créer ainsi une bobine virtuelle à une position D entre les bobines (510) et (516).
Van Kann Frank Joachim
Winterflood John
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Technological Resources Pty. Limited
LandOfFree
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