Optical fiber gyroscope theodolite and north-seeking method thereof

A technology of fiber optic gyroscope and theodolite, which is applied in the field of measuring instruments, can solve the problems of cumbersome and complicated north-seeking and high precision, and achieve the effect of high sensitivity, rich interfaces and fast measurement

Active Publication Date: 2013-09-11
TIANJIN NAVIGATION INSTR RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing fiber optic gyro north finder is mainly composed of fiber optic gyroscope, horizontal turntable and servo mechanism. The angular velocity of rotation requires a separate design of

Method used

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  • Optical fiber gyroscope theodolite and north-seeking method thereof
  • Optical fiber gyroscope theodolite and north-seeking method thereof
  • Optical fiber gyroscope theodolite and north-seeking method thereof

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Embodiment Construction

[0032] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be noted that the embodiments are illustrative, not restrictive, and cannot limit the protection scope of the present invention.

[0033] A fiber optic gyro theodolite, comprising a fiber optic gyroscope 1 and a theodolite 10, the fiber optic gyroscope is installed on the horizontal rotation part 2 of the theodolite, and the normal direction of the closed optical path of the fiber optic gyroscope is perpendicular to the horizontal rotation axis of the theodolite. A theodolite base gear 8 is installed on the outside of the fixed part of the theodolite base 7, and the theodolite base gear is connected with a drive motor 3 through a gear train. The gear set includes a driving friction wheel 5, a driven friction wheel 6, and a driving gear 4. The motor shaft of the driving motor is coaxially connected to the driving friction wheel. The gear mes...

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Abstract

The invention relates to an optical fiber gyroscope theodolite and a north-seeking method thereof. The optical fiber gyroscope theodolite comprises an optical fiber gyroscope and a theodolite, wherein the theodolite covers a total station. The optical fiber gyroscope is arranged on a horizontal rotating part of the theodolite; the normal of the closed light path of the optical fiber gyroscope is perpendicular to a horizontal rotating shaft of the theodolite; a theodolite base gear is arranged on the outer side of a theodolite base fixing part; the theodolite base gear is connected with a driving motor which is arranged on the horizontal rotating part of the theodolite through a gear set. The north-seeking method for the optical fiber gyroscope theodolite comprises the steps of dynamic north-seeking and static north-seeking. The optical fiber gyroscope theodolite is compact in structure, small in size, light in weight and suitable for being carried by a single person to be used in a complex terrain district. The instrument and the north-seeking method have the advantages of simplicity in operation, high rapidness, one-key north-seeking function, convenience in use and the like. In addition, the optical fiber gyroscope theodolite is wide in application range, is dual-purpose for the army and people and can be used for determination of north benchmark, mine and geodetic measurement, military survey and the like.

Description

technical field [0001] The invention relates to the field of surveying instruments, in particular to an optical fiber gyroscope theodolite and a north-seeking method thereof. Background technique [0002] The Sagnac effect of the fiber optic gyroscope is that the phase difference between two light waves propagating oppositely along the closed optical path is proportional to the input angular velocity in the normal direction of the closed optical path. The normal direction of the closed optical path of the FOG is the sensitive axis of the FOG. When the normal direction of the closed optical path of the FOG is horizontal, the FOG can be used to sense the horizontal component of the earth's rotation angular velocity. Using the output of different orientations when the normal direction of the closed optical path of the optical fiber gyroscope is horizontal, after collection, the angle between the initial normal direction of the closed optical path of the optical fiber gyroscope ...

Claims

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Application Information

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IPC IPC(8): G01C19/72
Inventor 袁士龙吴俊杰程志伟邱宇亮王磊
Owner TIANJIN NAVIGATION INSTR RES INST
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