Verfahren und Vorrichtung zur Korrektur von Meßwertverfälschungen bei invasiven Druckmessungen mit flüssigkeitsgefüllten Systemen

摘要

In order to correct corrupt measured values during invasive pressure measurements, the measured pressure is transferred to an external pressure transducer (3) via a liquid-filled system (1, 2). The electric output signal of the pressure transducer is supplied to a signal processing unit (5) via an analog digital converter (4) for digital Fourier analysis. In addition, an impact-like or segment-like analysis is carried out and the signal is combined with empirically established correction data on the basis of the analysis. The correction data is given as Fourier coefficients and the signal which is corrected by the signal processing unit (5) is transferred to an output and/or evaluation unit (6).