Patent ID: 7602173
Filing Date: 2009-10-13
Classification: G01L

Abstract:
1. A sensor system for detecting a differential angle, comprising at least one magnetic field-sensitive sensor element ( 12 ) that is able to evaluate the magnetic field information of a magnetic circuit, comprised of a magnetic pole wheel ( 10 ), which is connectable to a shaft ( 41 ), and ferromagnetic first and second flux rings ( 14 , 16 ) equipped with teeth ( 18 , 20 ), wherein the teeth ( 18 , 20 ) extend in the radial direction of the shaft ( 41 ) in order to take a radial reading of the magnetic field information of the magnetic pole wheel ( 10 ), wherein the magnetic flux collecting element ( 22 , 24 ) has a first shell ( 26 ) and second shell ( 20 ) that have different radii parallel to the first and second flux rings ( 14 , 16 ), wherein the magnetic flux collecting element ( 22 , 24 ) has a first shell ( 26 ) and second shell ( 20 ) that have different radii parallel to the first and second flux rings ( 14 , 16 ), and wherein the teeth engage in one another in the radial direction, whereby the first and second flux rings extend in the axial direction with different radii.