Tilt angle sensor based on arc-shaped cantilever beam and tilt angle detection method

The invention discloses a tilt angle sensor based on an arc-shaped cantilever beam and a tilt angle detection method, and relates to the technical field of tilt angle sensors, the tilt angle sensor comprises a stand column and an arc-shaped cantilever beam, the upper surface of the arc-shaped cantilever beam is provided with a spherical weight, and the spherical weight can move along the long side direction of the arc-shaped cantilever beam; the deflection of each point of the arc-shaped cantilever beam is changed along with the movement of the spherical weight; one end of the stand column is fixedly connected with one end of the arc-shaped cantilever beam; the arc-shaped cantilever beam is provided with a deflection monitoring point; rigid fixing frames are arranged on the sides, close to the arc-shaped cantilever beams, of the stand columns; the rigid fixing frame is provided with a distance measuring device. The distance measuring device comprises an optical fiber Fabry-Perot interference distance measurin