| 摘要 |
PURPOSE: A clinometer using an optical fiber grating sensor is provided to measure displacement of a subway tunnel at any time even if a subway is running through the tunnel. CONSTITUTION: A clinometers comprises a main body(60), a stator(21), a rotator(20), an optical fiber, an optical fiber grating sensor(10), and a sinker(40). The optical fiber is horizontally attached to the upper outer surface of the stator and the rotator to keep tension. The optical fiber grating sensor is installed in the optical fiber located between the stator and the rotator and measures angle and acceleration variation resulting from deformation. The sinker is installed in the vertical state.
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