Gyroscopically-oriented survey tool

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 47/022 (2012.01) G01C 9/00 (2006.01) G01V 9/00 (2006.01)

Patent

CA 2492623

A gyroscopically-oriented survey tool, includes a housing having an axis. Three accelerometers are mounted in the housing with their axes set orthogonally. A first of the axes is aligned to the axis of the housing. A second of the axes is perpendicular to the first. A third of the axes is perpendicular to both of the first and the second. Three gyroscopes are mounted pseudo-orthogonally in the housing with their axes set at relative angles of other than 90 degrees. None of the axes of the gyroscopes are mounted parallel to the axes of the accelerometers. This configuration permits data from the accelerometers to be used to check the quality of data from the gyroscopes.

L'invention concerne un outil de lève à orientation gyroscopique comprenant un bâti ayant un axe. Trois accéléromètres sont fixés au bâti, leurs axes étant à l'orthogonale. Le premier des axes est aligné sur l'axe du bâti. Le deuxième des axes est perpendiculaire au premier. Le troisième des axes est perpendiculaire aux premier et deuxième axes. Trois gyroscopes sont installés de manière pseudo-orthogonale dans le bâti, leurs axes étant fixés à des angles relatifs autres que 90 degrés. Aucun des axes des gyroscopes n'est monté de façon parallèle aux axes des accéléromètres. Cette configuration permet d'utiliser les données des accéléromètres pour vérifier la qualité des données des gyroscopes.

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