Patent ID: 7751657

Claim:
An inclinometer system comprising: at least one measuring unit, wherein the measuring unit includes: a body provided therein with a receiving part; a frame inserted into the body; a weight member inserted into the frame and having one end hinged to the frame, the weight member rotating in cooperation to inclination of the body; an optical fiber passing through both the body and the frame such that one end of the optical fiber is fixed to the weight member; a fixing member installed into the frame to fix an opposite end of the optical fiber; and a fiber bragg grating (FBG) sensor attached to the optical fiber, wherein the frame includes: side plates provided at a middle portion thereof with hinge holes communicating to each other; a top plate provided with a through hole such that the optical fiber passes through the through hole, having an inner surface onto which one end of the fixing member is fixed, and covering an end of the side plates; and a bottom plate provided therein with a through hole into which the weight member is inserted.