Method and sensor setup for determination of deflection and/or strain

摘要

A method and a corresponding sensor setup for determining the deflection and/or strain of an elongated member of a component is provided, in which a first point (16) and a second point (17) are assigned to the same side (11,12) of an elongated member of the component, wherein the deflection and/or strain of the elongated member is determined by determining the distance between the second point (17) and a third point (18), which is connected to the first point (16) by an inflexible support (5), whereby the distance between the first point (16) and the third point (18) is considerably longer than the distance between the second point (17) and the third point (18), and wherein the distance between the second point (17) and the third point (18) is determined in time steps and the frequency of the change of the distance is analysed to detect frequency changes.