US 10,768,197 B2 · Accelerometer

Abstract

An accelerometer device (100) comprises a former (118) and an optical fiber (120) wound around the former. The winding of optical fiber (120) has a sensing portion (126) that is free to move in relation to a direction of desired sensitivity (128). A movable element (106) is disposed opposite the sensing portion (126) of the optical fiber (120), the movable element (106) being translatable so as to urge against the sensing portion (126) of the optical fiber (120) from a position external to the winding of the optical fiber (120) in order to vary a length of the optical fiber (120). The variation in the length of the optical fiber (120) caused by the moveable element (106) is indicative of an acceleration in the direction of desired sensitivity (128).

Claims41

Dependent claims

An accelerometer device comprising:

a former;
an optical fiber wound around the former, the winding of optical fiber having a sensing portion having a first side and a second side opposite the first side, the second side being separated from the former by a gap;
and
a movable element disposed adjacent to the sensing portion of the optical fiber, the movable element being translatable so as to urge against the first side of the sensing portion of the optical fiber in order to vary a length of the optical fiber, the variation in the length of the optical fiber caused by the movable element being indicative of an acceleration in a direction of desired sensitivity, wherein the movable element is external to the winding of the optical fiber.

1 more element

Dependencies are inferred from the claim text.

Accelerometer

Life of this patent

Accelerometer

Life of this patent

Abstract

Claims41