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Tracking process taking into consideration a linear relationship

A linear relationship and associated technology, applied in the direction of engine lubrication, instruments, machines/engines, etc., can solve the problems of small echo amplitude, difficult correlation, and inability to distinguish

Active Publication Date: 2014-04-23
VEGA GRIESHABER GMBH & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The correlation is often difficult because two adjacent echoes are superimposed and thus cannot be distinguished, or because the amplitude of the echoes is too small compared to the case where the echoes can be clearly identified in this way

Method used

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  • Tracking process taking into consideration a linear relationship
  • Tracking process taking into consideration a linear relationship
  • Tracking process taking into consideration a linear relationship

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Embodiment Construction

[0077] The depictions in the drawings are schematic and not to scale. If the same reference numbers are used in different drawings, these reference numbers can denote the same or similar elements. However, identical or similar elements can also be identified by different reference signs.

[0078] Below, a possible embodiment of an evaluation unit of a fill-level measuring device is shown. The received echo curves can first be processed. A purposeful digital evaluation of the signal, for example by means of digital filtering, makes it easier for the method for extracting echoes to determine significant signal components or minimum or maximum values ​​from the echo curve.

[0079] The extracted echoes can be stored, for example, in the form of a list for further processing. However, other possibilities for accessing the data are possible besides storage in lists. The tracking function block will time point t i The echo curve of the echo versus time point t i+1 The echoes o...

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Abstract

According to an aspect of the invention, previously obtained information on the role of individual echoes is taken into consideration in order to improve the further tracking of said echoes by means of a tracking process. The expected position of an echo can be determined by calculating a linear relationship between two tracks, and it can be determined whether said position corresponds to an actual echo position in the echo curve.

Description

technical field [0001] The invention relates to the technical field of level measurement. In particular, the invention relates to a runtime level measuring device, a method for carrying out a tracking method by a level measuring device, a processor, a computer-readable medium and a program element. Background technique [0002] Run-time level measuring instruments work according to the FMCW or pulse run-time method. The measuring device emits electromagnetic or sound waves in the direction towards the filling material surface. The waves are then completely or partially reflected by different reflectors. The reflector can in particular be the surface of a filling medium such as water, oil, another fluid or fluid mixture or bulk material, the bottom of a container in which the filling medium is stored, contamination, separation layers between different filling materials ( For example, a separating layer between water and oil) or fixed disturbances in the container, such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/284G01F23/296
CPCG01F23/296G01F23/2962G01F23/284
Inventor 罗兰·韦勒克里斯蒂安·霍费雷尔
Owner VEGA GRIESHABER GMBH & CO