Patent ID: 7340960
Filing Date: 2008-03-11
Classification: G01L,G01M

Abstract:
1. A strain sensing apparatus, comprising: a deformable substrate configured to be coupled to a body, wherein the deformable substrate has a generally arcuate portion; and a strain sensing element formed from the deformable substrate, and located along the generally arcuate portion, configured to detect a strain of the body, wherein the deformable structure has an upper surface, an opposite lower surface configured to be coupled to the body, and a generally toroidal shape with an inner circumference and an outer circumference; wherein a first strain sensing element is located along a first portion of the toroidal shape and proximate to the inner circumference, and a second strain sensing element is located along the first portion and proximate to the outer circumference; wherein a third strain sensing element is located along a second portion of the toroidal shape and proximate to the inner circumference, and a fourth strain sensing element is located along the second portion and proximate to the outer circumference; and wherein the first portion is generally opposite to the second portion along the toroidal shape.