Sensor for determining strain, has structured resistance tracks, and additional piezoelectric strain-sensitive materially applied to carrier layer or spring material

摘要

The sensor has structured resistance tracks (4) applied directly or via a carrier material (3) to a spring material. In addition, a layer (2) of piezoelectric strain-sensitive material is applied to the carrier layer or to the spring material, and electrodes (7,17) are spaced apart at points in the strain direction. The voltage across the electrodes is proportional to a change in the strain.