초록 ▼

A surveying instrument sensor which includes a gimbal supported for rotation within a casing, a torquer coupled to rotate the gimbal with a first two-axis flexure suspended gyro supported on the gimbal with its spin axis perpendicular to the axis of the gimbal and one of its sensitive axes aligned w

A surveying instrument sensor which includes a gimbal supported for rotation within a casing, a torquer coupled to rotate the gimbal with a first two-axis flexure suspended gyro supported on the gimbal with its spin axis perpendicular to the axis of the gimbal and one of its sensitive axes aligned with the axis of the gimbal, a second two-axis flexure suspended gyro disposed on the gimbal with its spin axis alinged with the axis of the gimbal and having two sensitive axes outputs orthogonal thereto. The output of the first gyro is coupled to the torquer to form a gimbal stabilized loop and the outputs and torquing inputs of the second gimbal coupled into rate capture loops with output signals obtained from the rate captured loops permitting fast and accurate surveying of a well pipe.

대표청구항 ▼

A surveying instrument sensor comprising: (a) a sealed casing comprising first and second sections of pipe of a size permitting it to be lowered into a well pipe or the like containing within said first section: (i) a gimbal supported for rotation within said casing; (ii) a torquer coupled to rotate

A surveying instrument sensor comprising: (a) a sealed casing comprising first and second sections of pipe of a size permitting it to be lowered into a well pipe or the like containing within said first section: (i) a gimbal supported for rotation within said casing; (ii) a torquer coupled to rotate said gimbal; (iii) a first two-axis flexure suspended gyro supported on said gimbal with its spin axis perpendicular to the axis of said gimbal and one of its sensitive axes aligned with the axis of said gimbal; (iv) a second two-axis flexure suspended gyro supported on said gimbal with its spin axis perpendicular to the axis of said gimbal and one of its sensitive axes aligned with the axis of said gimbal; (v) means for coupling the output of said first gyro to said torquer to form a gimbal stabilized loop; (vi) means for coupling the outputs and torquing inputs of said second gyro into rate capture loops; (vii) means for obtaining from said rate captured loops rate output signals; and said second section of pipe having therein electronic circuit boards; (b) a slip ring/brush block mounted respectively to said gimbal and said casing for coupling signals to and from said torquer and said gyros and said circuit boards; and (c) means for connecting a cable to an end of said casing to remotely supply power thereto and receive signals therefrom as said casing is lowered into a well pipe or the like.