Method of using a band sensor for determining a position of a component inside a housing
AssigneeASM Automation Sensorik Messtechnik GmbH
InventorKlaus Manfred Steinich
Life of this patent
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Abstract
A method for using a band sensor for defining a position of a component in an interior of the housing. At least one magnet is coupled with a winding drum of the band sensor so the magnet is drivable in rotation about a magnetic rotation axis wherein a pole axis is disposed transverse to the magnetic rotation axis. The measuring band length varies with percentage of wind-up which is numerically compensated by processing electronics.
Claims29
A method for using a band sensor (1) according to the measuring band principle with a measuring band (4) to be wound up on a winding drum in a radial plane (11) for defining a position of a component in an interior of a housing and with a preloading unit preloading a winding drum (2) in windup direction, whereby the component is coupled with the free end of the measuring band, comprising:
- at least one magnet (3a . . . ) is rotationally coupled with the winding drum (2) of the band with sensor (1), so that the magnet is drivable by the winding drum (2) in rotation about a magnet rotation axis, wherein a pole axis of the magnet is disposed transversal to a magnet rotation axis;
- the band sensor (1) is disposed together with the magnet (3a . . . ) inside of a magnetically permeable wall portion (50a) of the housing;
- a magnetic field sensitive sensor (20) detecting a rotation position of a magnet (3a) is disposed on an outside of the housing opposite to the magnet (3a);
- and
- numerically compensating for the measuring band length varying with the percentage of windup by processing electronics.
A piston accumulator (50) comprising a piston (51) movable in longitudinal direction therein and a band sensor (1) according to the measuring band principle, wherein the measuring band sensor is mounted in the interior of the piston accumulator (50) at the end of the piston accumulator (50) distal from the piston (51), and wherein the free end of the measuring band (4) of the piston accumulator (50) is attached at the piston (51), comprising:
- at least one magnet (3a . . . ) is coupled with a winding drum (2) of the band sensor (1), so that the magnet is drivable in rotation about a magnet rotation axis (103′), wherein a pole axis of the magnet is disposed transversal to the magnet rotation axis (103′);
- the band sensor (1) is disposed together with the magnet (3a . . . ) at the inside of a magnetically permeable wall portion (50a) of the piston accumulator 50;
- a magnetic field sensitive sensor (20) detecting a rotation position of a magnet (3a . . . ) is disposed on the outside of the piston accumulator (50) opposite to the magnet (3a);
- and
- the measuring band length varying with the percentage of windup is numerically compensated by processing electronics.
A container (50′) for a liquid or a bulk material, the container comprising:
- a filling level measuring device including a float (51), which is attached at a band sensor (1) according to the measuring band principle, wherein the band sensor is disposed in the interior of the container (50′), wherein
- at least one magnet (3a) is coupled with a winding drum (2) of the band with sensor (1), so that the magnet is drivable in rotation about a magnet rotation axis (103′), wherein a pole axis is disposed transversal to the magnet rotation axis (103′);
- the band sensor (1) is disposed together with the magnet (3a) at an inside of a magnetically permeable wall portion (50a) of the container) (50′);
- a magnetic field sensitive sensor detecting a rotation position of the magnet (3a) is disposed on the outside of the container (50′) opposite to the magnet (3a), wherein
- the measuring band length varying with the percentage of windup is numerically compensated by processing electronics.
Dependencies are inferred from the claim text.