Sensor for measuring a periodic signal comprising several harmonics

摘要

The invention relates to a sensor for measuring a periodic signal comprising several harmonics wherein the first harmonic has a » spatial period, said sensor comprising an electrical circuit comprising at least one Wheatstone bridge, said Wheatstone bridge comprising at least four resistive groups, at least one of said groups comprising at least one set of p resistive elements (1) connected in series and having a geometrical barycentre spaced by »/pn + i» (i being an integer) from each other in order to filter at least harmonics n [2n] of the signal.