Patent ID: 7466125

Claim:
Position transmitter system for determining a position of a shaft that can rotate, having an AMR sensor unit or a GMR sensor unit, whereby the sensor unit is configured as a two-part AMR sensor or a two-part GMR sensor, or the sensor unit has two AMR sensors or GMR sensors, in which only a magnet ( 9 ) disposed on a shaft ( 10 ) to be monitored is provided for detecting the position, wherein the sensor unit ( 1 ) is used for detecting the 360° angle position and at the same time for detecting the complete revolutions and that the position data are derived exclusively from the signals of the AMR sensor unit or the GMR sensor unit, and that a microcontroller that is activated only during the measurement times is provided, and that a waking device ( 16 ) controlled by the magnet ( 9 ) is provided, for waking the microcontroller ( 14 ), and that the waking device ( 16 ) has at least one transducer ( 33 , 34 ) triggered by the magnetic field of the magnet ( 9 ); and wherein the position transmitter system has a closed housing, the sensor unit being disposed in the closed housing, and the magnet being disposed in or on the shaft to be monitored, lying opposite the sensor unit, outside of the housing; wherein there is a magnet carrier that can be adapted to the shaft to be monitored; wherein the magnet carrier is disposed outside of the housing ( 2 ) without contact; and said contact free mounting of said magnet ( 9 ) outside of said housing ( 2 ) permits selecting a variable axial distance (A) between said sensor ( 6 ) and said magnet ( 9 ), and said contact free mounting permits a longitudinal axis of said magnet ( 9 ) to vary a radial distance (B) from a longitudinal axis of said sensor unit ( 6 ).