Patent ID: 6466010
Filing Date: 2002-10-15
Classification: B60T,G01D

Abstract:
A displacement transducer for measuring an absolute value of a displacement of a mechanical component (2) or a displacement change of the mechanical component (2) and for generating an electrical output signal according to the displacement or the displacement change, said displacement transducer comprisinga magnetic tape (8, 8â€², 8â€³) having respective magnetic sections (11) with correspondingly changing magnetic polarity, said magnetic tape being connected to the mechanical component (2) so as to move with the mechanical component; and at least one detection device (13, 14) arranged next to said magnetic tape (8, 8â€², 8â€³) so that said magnetic tape moves past said at least one detection device (13, 14) in a longitudinal direction thereof when said mechanical component (2) moves, said at least one detection device (13, 14) including means for detecting said respective magnetic polarity changes as said respective magnetic sections move past said at least one detection device and means for generating said electrical output signal according to said magnetic polarity changes; wherein said at least one detection device (13, 14) is an anisotropic or giant magnetoresistive measuring element or is a Hall measuring element.