Multi-Antenna Radar Level Gauge for Topology Detection
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Solution Overview
Problem
Existing level measurement devices for bulk materials, such as radar level gauges, struggle with inaccuracies due to non-homogeneous surfaces and environmental conditions, leading to measurement inaccuracies and the inability to detect surface topology and adhesions accurately.
Innovation Solution
A radar level gauge with a multiple antenna system and digital beamforming technology, combined with multiple sets of calibration data for different environmental conditions, allows for precise measurement by compensating for environmental influences and adjusting to varying conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single antenna with focused beam is used for level measurement, then the device complexity is low, but the measurement precision deteriorates due to inability to capture surface topology variations
Solution Approach 1:
The single antenna is segmented into multiple antenna elements (at least three receiving elements and two transmitting elements) arranged in a specific geometric pattern. This segmentation allows the system to capture signals from different spatial directions, enabling topology detection and improved level measurement accuracy without requiring a mechanically complex multi-antenna system.
Solution Approach 2:
The patent transitions from conventional one-dimensional level measurement to three-dimensional topology detection by utilizing the spatial arrangement of multiple antenna elements. The system measures not only the fill level but also surface topology variations by analyzing signals received from different angular positions, adding dimensional information to the measurement process.
2Measurement precision
If numerous measurements are performed toward specific areas to capture surface topology accurately, then the measurement precision improves, but the device complexity and cost increase
Solution Approach 1:
The patent combines level measurement and topology detection functions into a single integrated antenna system. By using the same multiple antenna elements for both fill level determination and surface topology characterization, the system achieves high measurement precision without requiring separate measurement devices or complex multi-system integration.
Solution Approach 2:
The antenna system with multiple elements serves multiple functions simultaneously: it performs conventional level measurement, detects surface topology variations, identifies adhesion points on container walls, and characterizes bulk material flow patterns. This multi-functionality eliminates the need for separate specialized devices for each measurement type.
3Adaptability or versatility
If state-of-the-art level measuring devices are used, then the device simplicity is maintained, but the adaptability to different environmental conditions and material types deteriorates
Solution Approach 1:
The system performs preliminary calibration by storing multiple reference topology profiles corresponding to different environmental conditions and material types. During operation, the system compares real-time measurements against these pre-stored references to automatically adapt to current conditions, eliminating the need for manual recalibration and enhancing versatility without adding operational complexity.
Solution Approach 2:
The patent implements dynamic adaptability by enabling the system to switch between different measurement and evaluation modes based on detected conditions. The antenna system can adjust its operation to accommodate different bulk materials, container configurations, and environmental factors, providing versatile performance through software-controlled adaptability rather than hardware complexity.
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
Enhances measurement accuracy and adaptability to different environmental conditions, enabling accurate detection of surface topology and fill levels in bulk materials.
Implementation Method 1
The invention relates to a level measuring device for determining a level and a topology of a filling material with a radar unit
Implementation Method 2
a signal emitted toward a surface is reflected by it, and the propagation time and/or signal strength of the reflected signal is evaluated
Implementation Method 3
The antenna device (104) has a plurality of transmitting and/or receiving elements (120, 122), which enables a change in the main beam direction H and/or the main receiving direction H'
Implementation Method 4
The fill level is determined based on the time of flight
Data Source
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Figure 3~4a
Figure 4b
AI summary
The present invention relates to a topology-acquiring radar level gauge for measuring a fill level and a topology of a fill material, comprising: a radar unit; an antenna having at least one transmitting element and at least two receiving elements; a control unit; and a memory (501), characterized in that at least two different sets of calibration data are stored in the memory.