Land based unit for seismic data acquisition

G - Physics – 01 – V

Patent

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G01V 1/16 (2006.01) G01V 1/18 (2006.01) G01V 1/24 (2006.01)

Patent

CA 2724987

A self-contained, wireless seismic data acquisition unit having a cylindrically shaped case with smooth side walls along the length of the case. A retaining ring around the circumference is used to secure the cylindrical upper portion of the case to the cylindrical lower portion of the case. Interleaved fingers on the upper portion of the case and the lower portion of the case prevent the upper portion and the lower portion from rotating relative to one another. Ruggedized external electrical contacts are physically decoupled from rigid attachment to the internal electrical components of the unit utilizing electrical pins that "float" relative to the external case and the internal circuit board on which the pins are carried. The seismic sensors in the unit, such as geophones, and the antennae for the unit are located along the major axis of the cylindrically shaped case to improve fidelity and timing functions.

Linvention concerne une unité dacquisition de données sismiques sans fil, autonome, ayant un boîtier de forme cylindrique avec des parois latérales lisses sur toute la longueur du boîtier. Un anneau de retenue autour de la circonférence est utilisé pour fixer la partie supérieure cylindrique du boîtier à la partie inférieure cylindrique du boîtier. Des doigts entrelacés sur la partie supérieure du boîtier et la partie inférieure du boîtier empêchent la partie supérieure et la partie inférieure de tourner lune par rapport à lautre. Des contacts électriques externes renforcés sont physiquement découplés de la fixation rigide aux composants électriques internes de lunité, en utilisant des broches électriques qui « flottent » par rapport au boîtier extérieur et à la carte de circuit interne sur laquelle les broches sont supportées. Les capteurs sismiques de lunité, tels que des géophones, et les antennes pour lunité sont situés le long de laxe principal du boîtier de forme cylindrique, afin daméliorer les fonctions de fidélité et de synchronisation.

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