Radar Fill-Level Measurement With Automatic Parameter Selection
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Solution Overview
Problem
Existing fill level measuring devices struggle to automatically adapt their parameters to specific measurement situations, such as varying filling materials, dynamic product behavior, and environmental conditions, leading to inefficiencies in accuracy and energy consumption.
Innovation Solution
A radar level measuring device equipped with a selection device that automatically selects parameters like measurement duration, frequency range, and number of measurements using FMCW technology, adjusting based on signal-to-noise ratio, energy availability, and other influencing variables to optimize performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the fill level measuring device uses fixed measurement parameters, then the device structure remains simple, but the device cannot automatically adapt to different measurement situations, resulting in reduced measurement accuracy and increased energy consumption
Solution Approach 1:
The selection device automatically selects appropriate measurement parameters based on the current measurement situation without requiring manual intervention. The device evaluates characteristics such as filling material properties, container geometry, and environmental conditions to autonomously configure optimal measurement settings, thereby achieving self-adaptation while maintaining relatively simple device structure
Solution Approach 2:
The invention changes measurement parameters (such as measurement duration, measurement frequency, and number of consecutive measurements) dynamically based on the measurement situation. By adjusting these parameters according to signal-to-noise ratio, energy availability, and measurement requirements, the device achieves adaptability to different measurement conditions while avoiding the need for complex structural modifications
2Measurement precision
If the measurement duration is extended to improve accuracy, then measurement precision increases, but energy consumption increases
Solution Approach 1:
The measurement duration is made dynamic rather than fixed. The selection device adjusts the measurement duration based on the current measurement situation, signal-to-noise ratio, and energy availability. This allows the device to extend measurement duration when high accuracy is needed and energy is available, while reducing measurement duration when energy is constrained or the situation permits faster measurements
Solution Approach 2:
The invention dynamically changes the measurement duration parameter based on evaluation of measurement quality and energy status. By adapting this parameter to the specific measurement situation, the device achieves optimal balance between measurement accuracy and energy consumption rather than using a fixed duration that must compromise between these conflicting requirements
3Productivity
If the measurement frequency is increased to improve responsiveness, then measurement accuracy and responsiveness improve, but energy consumption increases
Solution Approach 1:
The measurement frequency is made dynamic and adaptable to the current situation. The selection device adjusts the measurement frequency based on factors such as filling material dynamics, container type, and energy availability. This allows the device to increase measurement frequency when rapid monitoring is needed while reducing frequency during stable conditions or when energy is constrained
Solution Approach 2:
The invention dynamically changes the measurement frequency parameter based on evaluation of measurement requirements and energy status. By adapting this parameter to the specific measurement situation, the device achieves optimal balance between measurement responsiveness and energy consumption rather than using a fixed frequency that must compromise between these conflicting requirements
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
Enables the device to perform optimized measurements by adapting to specific conditions, improving accuracy and reducing energy consumption, particularly in autonomous or battery-powered applications.
Implementation Method 1
a transmitting device (110) configured to transmit a radar signal (114) in a direction towards a filling material surface (194) to perform the measurement
Implementation Method 2
a receiving device (120) configured to receive the radar signal (114) reflected from the filling material surface (194) and to evaluate the measurement
Data Source
AI summary
A radar level measuring device is provided, the device being configured to perform a measurement for determining a level of a filling material by a frequency modulated continuous wave measurement method, the radar level measuring device including: a transmitting device configured to transmit a radar signal in a direction of a filling material surface to perform the measurement; a receiving device configured to receive the radar signal reflected from the filling material surface and to evaluate the measurement; a control device configured to control the transmitting device and the receiving device; and a selection device configured to select a parameter set for controlling the transmitting device and the receiving device, the parameter set including at least a measurement duration of the measurement, a minimum measurement frequency and a maximum measurement frequency of the measurement, and a number of consecutive measurements.