Patent ID: 7323865

Claim:
A device ( 1 ) for determining the angular position over 360° and rotation speed of a rotary member ( 12 ), driven by a rotation movement ( 32 ) about a rotation direction, said device comprising: a sensor ( 2 ) consisting of a fixed part ( 6 ) and a rotary part ( 8 ) linked to the rotary member ( 12 ), said rotary part bearing a magnetic flux generator ( 14 ) and said fixed part comprising: a first probe ( 22 ) generating a binary electrical signal (V 22 ) having two different levels as a function of the angular position of the rotary member, each level corresponding to a range of angular positions of the rotary member covering a segment of revolution, said levels being separated from each other by a discontinuity (D), a second probe ( 26 ) angularly offset in relation to the first probe ( 22 ) and generating an electrical signal (Vf) as a univalent function of the angular position of the rotary member for each of the segments of revolution corresponding to a level of the electrical signal generated by the first probe, analysis means ( 4 ) comprising first means ( 36 , 38 , 46 ) univalently defining over 360° the angular position of the rotary member, characterized in that: the sensor ( 2 ) also comprises a summing assembly ( 28 ) having an output ( 50 ) at which is generated an output signal (Vs), said assembly summing the electrical signal (V 22 ) generated by the first probe ( 22 ) and the electrical signal (Vf) generated by the second probe ( 26 ), such that the output signal (Vs) comprises discontinuities (d) corresponding to the discontinuities (D) of the electrical signal generated by the first probe ( 22 ) and that the variation (Vv) of the output signal (Vs) between two discontinuities (d) is less than the value (Vd) of the discontinuities (d) of the output signal (Vs), the analysis means ( 4 ) are linked to the output ( 50 ) of the sensor ( 2 ); the analysis means also include second means ( 36 , 40 , 42 , 44 ) calculating the rotation speed of the rotary member.