Piezoelectric lightweight force measuring elements, SmartCrash system, with digital data output / 9357B

The SmartCrash lightweight element consists of a cover plate and a base body. The piezoelectric quartz sensors (four units) are preloaded by an expansion screw between base plate and top plate and electronics for data preprocessing and digitization are integrated in the base body. Each individual SmartCrash force measuring element measures the three orthogonal forces Fx, Fy and Fz of the forces affecting during the crash. The piezoelectric sensors in the lightweight element generate a proportional charge on the force, which is summed, amplified and processed. A summation print and a charge amplifier with a unit for digitization of analog signals (DiMod module) is incorporated in each individual SmartCrash force measuring element. The charge signals are converted into a voltage signal, digitized by an A/D converter and stored in a central data recorder which simultanously executes the parametrization and control.