METHOD AND FILTER DEVICE FOR ELIMINATING BASELINE DRIFT OF A DETECTED MEASUREMENT SIGNAL

摘要

According to the invention, at the beginning, the measurement signal (25) is detected by means of a sensor unit (20) within a defined time period and is tapped by a processing unit (30). Subsequently, a filtered measuring signal (25) is determined by parallel low-pass filtering of the detected measurement signal (25) at least by means of a first filter unit (31), a second filter unit (32) and a third filter unit (33). The first filter element (31) has a first cutoff frequency, the second filter unit (32) has a second cutoff frequency and the third filter unit (33) has a third cutoff frequency. Finally, the filtered measurement signal (35) is emitted. The invention also relates to a filter device (10) with at least one sensor unit (20) and a processing unit (30), the processing unit (30) comprises at least one first filter unit (31), a second filter unit (32) and a third filter unit (33), and the processing unit (30) is designed to carry out the claimed method.