Antenna Device for Adaptive Fill Level Measurement
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Solution Overview
Problem
Existing fill level measurement technologies face inefficiencies in accurately determining fill levels, particularly in the presence of contaminants or mechanical defects, where the quality of electromagnetic wave reflections is compromised, leading to suboptimal measurement quality and increased measurement time.
Innovation Solution
An antenna apparatus with a control unit, analysis unit, transmitter units, and receiver units that can switch between profile determination and distance measurement modes, adjust signal energy based on quality measures, and employ digital beamforming to enhance signal quality and measurement efficiency, allowing for reliable fill level detection even in poor reflection conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If profile determination mode is used to achieve accurate fill level measurement, then measurement precision is improved, but measurement time increases and reliability decreases under poor signal conditions
Solution Approach 1:
The system dynamically switches between profile determination mode and distance measurement mode based on signal quality assessment. When signal quality is poor (indicative of contaminants or mechanical defects), the system transitions to distance measurement mode to reduce measurement time while maintaining acceptable accuracy. This dynamic adaptation resolves the contradiction by adjusting the measurement approach according to real-time conditions.
Solution Approach 2:
The system changes the measurement parameter being evaluated based on signal quality. In good signal conditions, full profile determination is performed for maximum precision. In poor signal conditions, the system shifts to measuring only distance parameters, which are more robust to signal degradation. This parameter change allows the system to maintain reliability while reducing measurement time under challenging conditions.
2Measurement precision
If profile determination mode is used to ensure accurate measurements, then measurement precision is improved, but reliability decreases in the presence of contaminants or mechanical defects
Solution Approach 1:
The system incorporates feedback through quality measure evaluation of received signals. The analysis unit assesses signal quality indicators and uses this feedback to determine whether to continue with profile determination or switch to distance measurement mode. This feedback mechanism ensures reliability by adapting the measurement strategy in response to poor signal conditions caused by contaminants or mechanical defects.
Solution Approach 2:
The measurement system dynamically adjusts its operation mode based on real-time signal quality assessment. When contaminants or mechanical defects degrade signal quality, the system transitions from profile determination to distance measurement, which is more reliable under such conditions. This dynamic adaptation maintains measurement reliability across varying operational conditions.
3Measurement precision
If multiple reception signals are processed to determine surface profile, then measurement precision is improved, but device complexity and processing requirements increase
Solution Approach 1:
The system applies partial action by selectively processing only the necessary signals based on quality assessment. Instead of always processing all received signals through full profile determination, the system processes only distance information when signal quality is poor, reducing computational complexity while maintaining acceptable measurement precision. This partial processing approach balances accuracy requirements with processing demands.
4Productivity
If distance measurement mode is used to reduce measurement time, then productivity is improved, but measurement precision decreases
Solution Approach 1:
The system dynamically selects the measurement mode based on signal quality conditions. Distance measurement mode, which provides faster results, is employed only when signal quality is poor and full profile determination would be unreliable or excessively time-consuming. When signal quality is good, the system switches to profile determination mode to maximize precision. This dynamic selection optimizes the balance between productivity and precision according to real-time conditions.
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 enables efficient and accurate fill level measurement by adapting to errors and poor signal quality, reducing the number of measurements required and improving signal-to-noise ratio, thus ensuring reliable operation in challenging conditions.
Implementation Method 1
a beam from an electromagnetic wave is guided over the filling material or the bulk material and the reflection behaviour is monitored and analysed at various angles
Data Source
AI summary
An antenna apparatus that comprises processing circuitry that transmits a transmission signal by at least one transmitter and that receives at least two reception signals by at least one receiver. The antenna apparatus is used for topology measurement and can switch to outright fill level measurement if there is a deviation from a threshold for a quality measure.