Pressure sensing device for rotatable parts and pressure detection method therefor

Described herein is a magnetic pressure sensing device for rotatably moving parts, of the type comprising at least one magnetic field source element (13) associated to said rotatably moving part (11) and a magnetic field sensing element (14) associated to a fixed part (15) to measure parameters of a magnetic field (H) determined by said magnetic field source element (13), said parameters of the magnetic field (H) being a function of the pressure (P) applied to said rotatably moving part (11). The magnetic field source element (13) comprises means (22; 32; 53) for rotating around at least one axis (25; 45; 65) the direction of said magnetic field (H) as a function of the pressure (P) applied to said rotatably moving part (11).