| 摘要 |
The invention relates to a path sensor (1a; 1b; 1c) comprising at least one magnetoelectric transformer element (5) and a magnetic circuit with at least one flux conductor path (3, 4; 9, 10; 14, 15) and at least one magnet (2; 11). Said path sensor is smaller in size. The influence on magnetic flux caused by displacement of an object can be measured by the transformer element (5). The flux conductor path (3, 4; 9, 10; 14, 15) and the transformer element (5) are arranged in an unaltered position in relation to each other during the measuring of the path. Said parts (3, 4, 5; 9, 10; 14, 15) and the at least one magnet (2; 11) can be displaced relative to each other. Modification of the magnetic field which can be evaluated by the transformer element (5) is carried out by modifying the air gap (d) in the magnetic circuit during the displacement of the magnet (2; 11). The contour of the flux conductors parts (3, 4; 9, 10; 14, 15) of the magnetic circuit surround the path of the magnets (2, 11) in such a manner that modification of the width (d) of the air gaps in the course of the path (6; 12) results in a predetermined signal progression in the transformer element (5). |
