A fiber grating inclination sensing device and inclination monitoring method for high gravity test
By employing a contact structure between a metal ball and a V-shaped elastic thin plate, along with a temperature compensation method, the effects of gravity and temperature drift are eliminated, enabling high-precision tilt measurement of the fiber optic tilt sensor under hypergravity conditions. This technology is suitable for complex engineering environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NANJING UNIV
- Filing Date
- 2026-06-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing fiber optic tilt sensors are susceptible to the effects of counterweight mass, equivalent gravitational acceleration amplitude, and temperature drift in hypergravity environments, making it difficult to achieve high-precision tilt angle measurement.
The structure employs a metal ball in contact with symmetrical V-shaped elastic thin plates. By calculating the tilt angle through temperature compensation and normalized differential wavelength decomposition, and by setting a limiting boss and a top anti-detachment limiting post, the influence of the metal ball's mass and equivalent gravitational acceleration amplitude is eliminated, thereby reducing temperature drift.
It achieves high-precision tilt angle measurement of the sensor in hypergravity environment, is suitable for complex engineering environments, and has the characteristics of anti-electromagnetic interference, long-distance transmission and easy reuse.
Smart Images
Figure CN122408710A_ABST