ACCELEROMETER FOR MEASURING VIBRATIONS WITH AN OPTICAL SENSOR

摘要

The invention relates to a device (1) for detecting the acceleration of a support (2) which is movable relative to a reference frame (3), the device (1) comprising a frame (4) intended to be fixed on the support (2), an overhang (cantilever) formed by a flexible element (5), elongate and having two opposite ends (51, 52), a first end (51) which is linked to the frame (4) and a second end (52) which, upon bending of the flexible member (5) is free to move relative to a reference axis (53) extending longitudinally to the flexible member (5). ), the flexible element consists of two optical fibers (54, 55), connected by a spacer member (56) to define a preferred direction of deformation. The first fiber (54) emits light from an end face to a spherical mirror. The second fiber (55) collects light only when the two fibers are in a reference plane.