Echo Tracking Mobility Adjustment
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Solution Overview
Problem
Existing level measurement devices face challenges in accurately assigning echoes to specific tracks due to difficulties in tracking the movement and position shifts of echoes over time, leading to incorrect assignments and reduced reliability in determining the filling material's surface position.
Innovation Solution
A fill level measuring device with a computing unit that determines mobility values of echoes and employs a modified tracking method, using expectation functions to account for past movements and position shifts, thereby improving the assignment of echoes to tracks by adjusting the width or variance of the expectation function based on echo mobility and position changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tracking methods are used to group echoes from temporally successive echo curves, then the tracking process can be performed, but correct assignment of echoes to specific tracks becomes difficult and reliability decreases
Solution Approach 1:
The patent applies parameter changes by determining mobility values for echoes based on their positional shifts between successive echo curves. The tracking method uses these mobility values as dynamic parameters to adjust the expectation function width, allowing the system to adapt to different echo behaviors (stationary vs. moving) and improve assignment reliability without excessive complexity
Solution Approach 2:
The patent implements dynamics by making the expectation function width variable rather than fixed. The width is adjusted based on the mobility value of each echo, creating a dynamic tracking system that can handle both stationary and moving echoes appropriately, thereby improving reliability while managing complexity through adaptive behavior
2Measurement precision
If the expectation function width is kept fixed for all echoes, then the tracking method is simple, but correct echo assignment becomes difficult when echoes have different mobility characteristics
Solution Approach 1:
The patent applies local quality by assigning different expectation function widths to different echoes based on their individual mobility characteristics. Each echo receives a tailored tracking parameter (expectation function width) according to its specific behavior, improving measurement precision for both stationary and moving echoes while keeping the overall algorithm manageable through localized adaptation
3Reliability
If mobility values are determined and used in the tracking method, then echo assignment accuracy improves, but the processing complexity and computational requirements increase
Solution Approach 1:
The patent applies partial action by determining mobility values selectively for echoes that require tracking, rather than applying complex processing to all signals uniformly. The mobility determination is performed as needed for the tracking algorithm, providing improved reliability while limiting processing complexity to only where necessary for correct echo assignment
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances the robustness of echo tracking, especially in scenarios with changing amplitude ratios and false echoes, by correctly assigning echoes to tracks and improving the accuracy of filling level measurements.
Implementation Method 1
a level measuring device for determining mobility values of echoes of an echo curve
Implementation Method 2
The incoming signals are reflected at the surface of the medium or material being measured and return to the level gauge after a certain travel time
Implementation Method 3
A positional shift of an echo within an echo curve refers, for example, to the movement of an echo that occurs during the acquisition of the echo curve. This movement can be detected, for instance, using Doppler analysis of the echo curve
Data Source
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AI summary
The level gauge (101) has a calculation unit that determines mobility value of an initial echo of initial echo curve with consideration of a positional shift of initial echo and a positional shift of maximum echo of initial echo curve. The allocation of echoes of next echo curve is performed by utilizing an expectancy function. The calculation unit is designed for performing a tracking process of echo signals reflected by filling medium (105) based on determined mobility value to group echoes of successive echo curves that are caused by the same reflection point. Independent claims are included for the following: (1) method for performing tracking process of echo signal reflected by filling medium; and (2) computer readable medium for storing program for performing tracking process of echo signal reflected by filling medium.