摘要 |
An apparatus ( 10 ) for sensing the position of a vehicle seat ( 12 ) movable between a forward position and a rearward position includes a Hall effect device ( 80 ) and a magnet ( 82 ) that produces a magnetic field that acts on the Hall effect device. A member ( 100 ) is constructed of a ferromagnetic material and has a portion ( 110 ) positioned adjacent the magnet ( 82 ). The portion ( 110 ) has a size that is unique for every different position of the vehicle seat ( 12 ) between the forward and rearward positions. The portion ( 110 ) of the member ( 100 ) alters the flux path of the magnetic field which varies the portion of the magnetic field acting on the Hall effect device ( 80 ) to a degree that depends on the size of the portion. The Hall effect device ( 80 ) provides a signal functionally related to the magnitude of the magnetic field acting on the Hall effect device. |