Radar Fill Level Measurement Adaptive Transmitting Power
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Solution Overview
Problem
Radar fill level measurement devices face challenges in accurately determining fill levels due to variations in medium reflectivity and interference from container fixtures, leading to inaccurate measurements and increased energy consumption, especially when transmitting power is adjusted manually or fixed.
Innovation Solution
A radar fill level measurement device with an adaptive transmitting power system, where a controller adjusts the transmitting power based on current measurement conditions, adapting evaluation parameters to ensure precise fill level determination by filtering out interference and optimizing energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fixed transmitting power is used, then device complexity is reduced, but measurement precision deteriorates due to variations in medium reflectivity
Solution Approach 1:
The patent implements dynamic transmitting power adjustment by varying the power level based on the measured fill level. The controller adapts the transmitting power to the current measurement conditions, using higher power when the medium has low reflectivity and lower power when reflectivity is high, thereby maintaining measurement precision across varying conditions.
Solution Approach 2:
The patent changes the transmitting power parameter dynamically during operation. The controller modifies the power level of the transmission signal based on feedback from the reception signal analysis, allowing the system to optimize measurement precision by adapting the power parameter to the specific reflectivity characteristics of the medium being measured.
2Adaptability or versatility
If manual power adjustment is used, then adaptability is improved, but ease of operation deteriorates due to increased manual intervention
Solution Approach 1:
The patent implements self-service operation where the controller automatically adjusts the transmitting power based on the measured fill level and medium reflectivity characteristics. The system performs self-diagnosis and self-adjustment without requiring manual intervention, selecting optimal power levels autonomously to maintain measurement precision across different medium conditions.
Solution Approach 2:
The patent employs feedback control where the reception signal is analyzed to determine the reflectivity of the medium, and this information is fed back to the controller which then adjusts the transmitting power accordingly. This closed-loop feedback mechanism enables the system to adapt to varying medium conditions automatically, improving both adaptability and ease of operation.
3Measurement precision
If high transmitting power is used, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
The patent uses dynamic power adjustment to optimize the balance between measurement precision and energy consumption. The controller varies the transmitting power level based on the measured fill level and medium reflectivity, using high power only when necessary for low-reflectivity conditions and reducing power when the medium provides sufficient signal reflection, thereby minimizing overall energy consumption while maintaining adequate measurement precision.
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 adaptive transmitting power system enhances measurement precision, reduces energy consumption, and minimizes manual maintenance by dynamically adjusting power levels according to the medium's reflectivity and interference, ensuring reliable fill level measurements across varying conditions.
Implementation Method 1
a radar module for generating a transmission signal, in particular a high-frequency radar transmission signal
Implementation Method 2
part of the transmission signal is reflected by the surface and is received in turn by the radar fill level measurement device as a reception signal
Implementation Method 3
Based on a propagation time method, the distance of the radar fill level measurement device from the surface of the medium and/or the fill level of the medium can thus be determined
Data Source
AI summary
A radar fill level measurement device for determining a fill level of a medium is provided, including a transmitter configured to transmit a transmission signal towards the medium; a receiver configured to receive a reception signal reflected by the medium; and a controller configured to determine the fill level of the medium based on the reception signal and based on at least one evaluation parameter, the radar fill level measurement device being configured to vary a transmitting power of the transmission signal, the controller being further configured to determine a current transmitting power of the transmission signal, and the controller being further configured to vary, based on the determined current transmitting power, a value of the at least one evaluation parameter and/or at least one measurement signal that correlates with the reception signal, such that the fill level is determined taking into account the transmitting power.