Back to results
US 10,308,464 B2Granted
Apparatus and method for determining a distance measure on wound-up materials
AssigneeFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
InventorsGuenther Kostka, Peter Schmitt, Oliver Scholz, Ulf Hassler
Life of this patent
Estimating the term…
Abstract
A distance measure between a beginning and an end of a material strip wound onto a body in a tangential direction can be determined by creating a height profile of a surface of the material strip, which covers the beginning and the end of the wound material strip in the tangential direction. If a position value of the beginning of the material strip is determined in the created height profile, the distance measure can be determined using this position value and the height profile covering the end of the material strip.
Claims18
A method of determining a distance measure between a beginning of a material strip and an end of the material strip wound onto a body in a tangential direction by a winding operation, comprising:
- creating, by a sensor device, a height profile of a surface of the material strip, wherein the height profile covers the beginning of the wound material strip and the end of the wound material strip in the tangential direction, wherein the height profile is created using a signal recorded by the sensor device during the winding operation, wherein height information associated with respective position values is determined and stored for a plurality of position values known or being equidistant in a tangential direction to obtain a stored height profile;
- determining, by an evaluator, a position value of the beginning of the material strip in the stored height profile;
- and
- determining, by a determiner, the distance measure by using the position value of the beginning and a range of the stored height profile covering the end of the material strip,
- wherein the determining the distance measure comprises
- extrapolating the position value of the beginning of the material strip in the stored height profile to an extrapolated position value in the stored height profile by adding a complete revolution of the body to the position value of the beginning of the material strip in the stored height profile,
- performing an analysis of the position values in the stored height profile only in the range surrounding the extrapolated position value in the stored height profile in order to find a position value of the end of the material strip, so that the end of the material strip in the stored height profile is logically distinguished from artifacts occurring outside of the range surrounding the extrapolated position value in the stored height profile, and
- determining, as the distance measure, a tangential distance between the position value of the beginning of the material strip in the stored height profile and the position value of the end of the material strip in the stored height profile;
- and
- wherein at least one of the sensor device, the evaluator, and the determiner comprises a hardware implementation.
7 more elements
An apparatus for determining a distance measure between a beginning of a material strip and an end of the material strip wound onto a body in a tangential direction by a winding operation, comprising:
- a sensor device formed to create a height profile of a surface of the material strip, wherein the height profile covers the beginning of the wound material strip and the end of the wound material strip in the tangential direction, wherein the height profile is created using a signal recorded by the sensor device during the winding operation, wherein height information associated with respective position values is determined and stored for a plurality of position values known or being equidistant in a tangential direction to obtain a stored height profile;
- an evaluator formed to analyze the stored height profile so as to determine a position value of the beginning of the material strip in the stored height profile;
- and
- a determiner formed to determine the distance measure using the position value of the beginning of the material strip in the stored height profile and a range of the stored height profile covering the end of the material strip in the stored height profile;
- wherein the determiner is configured
- to extrapolate the position value of the beginning of the material strip in the stored height profile to an extrapolated position value in the stored height profile by adding a complete revolution of the body to the position value of the beginning of the material strip in the stored height profile,
- to perform an analysis of the position values in the stored height profile only in the range of the stored height profile surrounding the extrapolated position value in the stored height profile in order to find a position value of the end of the material strip in the stored height profile, so that the end of the material strip in the stored height profile is logically distinguished from artifacts occurring outside of the range surrounding the extrapolated position value in the stored height profile, and
- to determine, as the distance measure, a tangential distance between the position value of the beginning of the material strip in the stored height profile and the position value of the end of the material strip in the stored height profile.
5 more elements
A non-transitory storage medium having stored thereon a computer program with a program code for performing, when the program is executed on a computer, a method of determining a distance measure between a beginning of a material strip and an end of the material strip wound onto a body in a tangential direction by a winding operation, the method comprising:
- creating a height profile of a surface of the material strip, wherein the height profile covers the beginning of the wound material strip and the end of the wound material strip in the tangential direction, wherein the height profile is created using a signal recorded by the sensor device during the winding operation, wherein height information associated with respective position values is determined and stored for a plurality of position values known or being equidistant in a tangential direction to obtain a stored height profile;
- determining a position value of the beginning of the material strip in the stored height profile;
- and
- determining the distance measure by using the position value of the beginning of the material strip in the stored height profile and a range of the height profile covering the end of the material strip,
- wherein the determining the distance measure comprises
- extrapolating the position value of the beginning of the material strip in the stored height profile to an extrapolated position value in the stored height profile by adding a complete revolution of the body to the position value of the beginning of the material strip in the stored height profile,
- performing an analysis of the position values in the stored height profile only in the range surrounding the extrapolated position value in the stored height profile in order to find a position value of the end of the material strip, so that the end of the material strip in the stored height profile is logically distinguished from artifacts occurring outside of the range surrounding the extrapolated position value in the stored height profile, and
- determining, as the distance measure, a tangential distance between the position value of the beginning of the material strip in the stored height profile and the position value of the end of the material strip in the stored height profile.
5 more elements
A system for winding a material strip onto a body in a tangential direction by a winding operation, comprising:
- a rotator coupled to the body and formed to set the body to rotation in a tangential direction and wind up the material strip;
- and
- a control device for determining a distance measure between a beginning of the material strip and an end of the material strip wound onto the body in the tangential direction, the control device comprising:
- a sensor device formed to create a height profile of a surface of the material strip, wherein the height profile covers the beginning of the wound material strip and the end of the wound material strip in the tangential direction, wherein the height profile is created during using a signal recorded by the sensor device the winding operation, wherein height information associated with respective position values is determined and stored for a plurality of position values known or being equidistant in a tangential direction to obtain a stored height profile;
- an evaluator formed to analyze the stored height profile so as to determine a position value of the beginning of the material strip in the stored height profile;
- and
- a determiner formed to determine the distance measure using the position value of the beginning of the material strip in the stored height profile and a range of the stored height profile covering the end of the material strip in the stored height profile,
- wherein the determiner is configured
- to extrapolate the position value of the beginning of the material strip in the stored height profile to an extrapolated position value in the stored height profile by adding a complete revolution of the body to the position value of the beginning of the material strip in the stored height profile,
- to perform an analysis of the position values in the stored height profile only in the range of the stored height profile surrounding the extrapolated position value in the stored height profile in order to find a position value of the end of the material strip in the stored height profile, so that the end of the material strip in the stored height profile is logically distinguished from artifacts occurring outside of the range surrounding the extrapolated position value in the stored height profile, and
- to determine, as the distance measure, a tangential distance between the position value of the beginning of the material strip in the stored height profile and a range of the stored height profile covering the end of the material strip in the stored height profile.
8 more elements
Dependencies are inferred from the claim text.