Patent ID: 9689757
Date: 2017-06-27
CPC Classifications: G01B,G01L

Claim:
1. A strain transmitter for purposes of detecting a strain on a structure, comprising: a strain body with a strain axis wherein the strain body has a shape similar to that of an S, with two outer end regions and a central region, wherein the connections of the central region to the outer regions are arranged symmetrically with respect to a central point, external to the strain axis; two attachment devices spaced apart from each other and connected to the strain body for purposes of attaching the strain body to the structure, a first one of the two attachment devices connected to a first one of the outer regions and a second one of the two attachment devices connected to a second one of the outer regions; a measuring element, which is arranged centrally on the central region of the strain body on the strain axis between the attachment devices and includes a plate, a chip, a full bridge, a circuit board and electric contacts; wherein the plate having a front side and a back side disposed opposite the front side, and the strain body is attached to the back side of the plate and defines a continuous opening extending to the back side of the plate, wherein the chip is a piezo-resistive silicon chip having its full surface mounted to the back side of the plate and configured to conduct static measurements such that in the strained state the chip outputs a voltage proportional to its strain, wherein the full bridge is connected to the chip, and wherein the electric contacts are led from the chip via the circuit board.