Device for measuring paths and/or positions
First Claim
1. A path and/or position measuring device comprising a magnet (2) and a sensor (3) detecting the magnetic field intensity, the magnet (2) and/or the sensor (3) co-operating with a movable element (4), the magnet (2) being formed in such a way that the magnetic field intensity varies along an axis (5) of the magnet (2), and it being possible for a relative movement between the sensor (3) and the magnet (2) substantially in the direction of this axis (5) of the magnet (2) to be brought about by means of the movable element (4) in such a way that the path and/or the position of the movable element (4) can be determined on the basis of the magnetic field intensity detected by the sensor (3), characterized in that the magnet (2) is fastened to the movable element (4).
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Accused Products
Abstract
The invention relates to a path and/or position measuring device (1) comprising a magnet (2) and a sensor (3) detecting the magnetic field intensity. The magnet (2) and/or the sensor (3) co-operate with a movable element (4), it being possible for a relative movement between the sensor (3) and the magnet (2) to be brought about by means of the movable element (4). Furthermore, the magnet (2) is formed in such a way that the magnetic field intensity varies along an axis (5) of the magnet (2) and is not constant. The relative movement is substantially in the direction of this axis (5) of the magnet (2). The path and/or the position of the movable element (4) can be determined on the basis of the magnetic field intensity detected by the sensor (3).
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Citations
19 Claims
- 1. A path and/or position measuring device comprising a magnet (2) and a sensor (3) detecting the magnetic field intensity, the magnet (2) and/or the sensor (3) co-operating with a movable element (4), the magnet (2) being formed in such a way that the magnetic field intensity varies along an axis (5) of the magnet (2), and it being possible for a relative movement between the sensor (3) and the magnet (2) substantially in the direction of this axis (5) of the magnet (2) to be brought about by means of the movable element (4) in such a way that the path and/or the position of the movable element (4) can be determined on the basis of the magnetic field intensity detected by the sensor (3), characterized in that the magnet (2) is fastened to the movable element (4).
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10. A path and/or position measuring device comprising a magnet (2′
- ) and a sensor (3) detecting the magnetic field intensity, the magnet (2′
) and/or the sensor (3) co-operating with a movable element (4), the magnet (2′
) being formed in such a way that the magnetic field intensity varies along an axis (5) of the magnet (2′
), and it being possible for a relative movement running substantially in the direction of this axis (5) of the magnet (2′
) between the sensor (3) and the magnet (2′
) to be brought about by means of the movable element (4) in such a way that the path and/or the position of the movable element (4) can be determined on the basis of the magnetic field intensity detected by the sensor (3), characterized in that the magnet (2′
) has at least two regions (23, 24), and in that the magnetic field intensity varies differently in the two regions (23, 24) in such a way that the resolution for the path and/or position determination is different in the two regions (23, 24). - View Dependent Claims (11, 12, 13, 14)
- ) and a sensor (3) detecting the magnetic field intensity, the magnet (2′
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15. A path and/or position measuring device comprising a magnet (2) and a sensor (3) detecting the magnetic field intensity, the magnet (2) and/or the sensor (3) co-operating with a movable element (4), the magnet (2) being formed in such a way that the magnetic field intensity varies along an axis (5) of the magnet (2), and it being possible for a relative movement running substantially in the direction of this axis (5) of the magnet (2) between the sensor (3) and the magnet (2) to be brought about by means of the movable element (4) in such a way that the path and/or the position of the movable element (4) can be determined on the basis of the magnetic field intensity detected by the sensor (3), characterized in that the path and/or position measuring device (1) has a further magnet (2″
- ), the further magnet (2″
) likewise being formed in such a way that the magnetic field intensity varies along an axis (5) of the magnet (2″
), in that the two magnets (2, 2″
) are arranged opposite each other in such a way that the axes (5) of the two magnets (2, 2″
) run substantially parallel to each other, and in that the sensor (3) is located between the two magnets (2, 2″
). - View Dependent Claims (16, 17, 18, 19)
- ), the further magnet (2″
Specification