Device and method for determining media and container properties
AssigneeVEGA Grieshaber KG
InventorsKarl Griessbaum, Roland Welle
Life of this patent
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Abstract
A fill-level measuring device includes a self-learn device that can calculate the length of the dome shaft, the container height, the permeability value of a feed material or the permittivity value of a feed material. This takes place with the use of one or several determined speed values of echoes of a measured echo curve. In this manner the accuracy of fill level determination can be improved.
Claims12
A fill-level measuring device for determining a position of at least one of (a) a fill level, (b) a feed material and (c) an interface between two feed materials in a container, wherein fill-level measuring device is configured to emit electromagnetic or acoustic waves in a direction of a feed material surface, comprising:
- an echo curve acquisition device configured to acquire at least one echo curve based a received signal from the emitted electromagnetic or acoustic waves;
- an echo identification device configured to identify at least two echoes in the at least one echo curve;
- and
- a speed determination device configured to determine speed values of the at least two echoes;
- wherein the fill-level measuring device is further configured to automatically determine a characteristic value relating to (a) a length of a dome shaft of a dome arranged in an apex region of the container, (b) a container height of the container, (c) a permeability value of a feed material, and/or (d) a permittivity value of a feed material, and
- wherein the fill-level measuring device is further configured to automatically determine the characteristic value with the use of at least one of the determined speed values of the echoes.
A method for determining, using a fill-level measuring device, a position of a fill level of at least one of (a) a feed material and (b) an interface between two feed materials, comprising the steps of:
- emitting, using the fill-level measuring device, electromagnetic or acoustic waves in a direction of a feed material surface;
- acquiring, using an echo curve acquisition device of the fill-level measuring device, at least one echo curve based a received signal from the emitted electromagnetic or acoustic waves;
- identifying, using an echo identification device of the fill-level measuring device, at least two echoes in the at least one echo curve;
- determining, using a speed determination device of the fill-level measuring device, speed values of the at least two echoes;
- and
- automatically determining, using the fill-level measuring device, a characteristic value relating to (a) a length of a dome shaft of a dome arranged in an apex region of a container, (b) a container height of the container, (c) a permeability value of a feed material, and/or (d) a permittivity value of a feed material;
- wherein in the automatically determining step, at least one of the determined speed values of the echoes is utilized.
A program element stored in a non-transitory computer-readable medium, wherein the program element, when executed on a processor of a fill-level measuring device, instructs the processor to carry out the following steps:
- emitting electromagnetic or acoustic waves in a direction of a feed material surface;
- acquiring at least one echo curve based a received signal from the emitted electromagnetic or acoustic waves;
- identifying at least two echoes in the at least one echo curve;
- determining speed values of the at least two echoes;
- and
- automatically determining a characteristic value relating to (a) a length of a dome shaft of a dome arranged in an apex region of a container, (b) a container height of the container, (c) a permeability value of a feed material, and/or (d) a permittivity value of a feed material;
- wherein in the automatically determining step, at least one of the determined speed values of the echoes is utilized.
A non-transitory computer-readable medium for storing a program element which, when executed on a processor of a fill-level measuring device, instructs the processor to carry out the following steps:
- emitting electromagnetic or acoustic waves in a direction of a feed material surface;
- acquiring at least one echo curve based a received signal from the emitted electromagnetic or acoustic waves;
- identifying at least two echoes in the at least one echo curve;
- determining speed values of the at least two echoes;
- and
- automatically determining a characteristic value relating to (a) a length of a dome shaft of a dome arranged in an apex region of a container, (b) a container height of the container, (c) a permeability value of a feed material, and/or (d) a permittivity value of a feed material;
- wherein in the automatically determining step, at least one of the determined speed values of the echoes is utilized.
Dependencies are inferred from the claim text.