Vibronic Measuring System Disturbance Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vibronic measuring systems, such as Coriolis-mass flow measuring devices, face challenges in detecting disturbances like wear or aging phenomena that reduce measurement accuracy and operational safety, especially under varying conditions and without interrupting the measurement process.
Innovation Solution
A vibronic measuring system with a tube arrangement and exciter/sensor configuration that utilizes mechanical couplings to monitor changes in measured variables and transducer conditions, allowing for early detection and signaling of disturbances through phase difference analysis in oscillation signals, even when conventional oscillation exciters and sensors are used.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional oscillation exciters and sensors are used to monitor tube arrangement conditions, then the system can detect disturbances like wear or aging phenomena, but the measurement process must be interrupted to perform these monitoring operations
Solution Approach 1:
The patent enables continuous monitoring of tube arrangement conditions by utilizing the measurement process itself to generate monitoring data. The oscillation signals used for primary measurement also contain information about tube conditions, allowing simultaneous measurement and monitoring without interruption. This resolves the contradiction by making the useful action (measurement) continuous while adding the monitoring function.
Solution Approach 2:
The patent makes the measurement system multi-functional by using the same oscillation exciters and sensors for both primary measurement and condition monitoring. The oscillation signals serve dual purposes: determining flow parameters and detecting tube wear or aging phenomena. This eliminates the need for separate monitoring operations that would interrupt the measurement process.
2Reliability
If additional monitoring operations are performed to detect disturbances, then measurement accuracy and operational safety are maintained, but the complexity of the measuring system increases
Solution Approach 1:
The patent implements self-service monitoring where the measurement system monitors itself using its own operational signals. The oscillation signals generated during normal measurement contain information about tube conditions, and the existing evaluation unit processes these signals to detect disturbances. This approach maintains operational safety without requiring external monitoring equipment or complex additional systems.
Solution Approach 2:
The patent merges the primary measurement function and the condition monitoring function into a single integrated system. The same oscillation exciters, sensors, and evaluation unit handle both measurement tasks simultaneously. This consolidation avoids increasing device complexity while maintaining reliability through multi-functional operation.
3Measurement precision
If phase difference analysis is used to detect changes in tube characteristics, then early detection of disturbances is enabled, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent uses feedback from the oscillation signals themselves to detect tube conditions. By analyzing phase differences in the signals returned from the tube arrangement, the system continuously monitors tube characteristics and compares them against reference values. This feedback mechanism enables precise detection of disturbances while using standard signal processing techniques already present in the measurement system.
Solution Approach 2:
The patent focuses on analyzing specific characteristics (phase differences) of the oscillation signals rather than performing comprehensive analysis of all signal parameters. This partial action approach concentrates computational resources on the most relevant indicators of tube conditions, enabling precise disturbance detection without excessive analysis 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
Enables early and reliable detection of disturbances, maintaining measurement accuracy and operational safety without interrupting the measurement process, and can identify changes in tube characteristics and sensor/exciter performance, thus preventing potential failures.
Implementation Method 1
an exciter arrangement for converting electrical power into mechanical power serving for exciting and maintaining forced mechanical oscillations of the tube arrangement
Implementation Method 2
a sensor arrangement for registering mechanical oscillations of the tube arrangement and for providing oscillation measurement signals representing oscillatory movements of the tube arrangement
Implementation Method 3
The first and second tubes of the tube arrangement are mechanically coupled with one another at least via the first and second flow dividers in such a manner that forced mechanical oscillations of the first tube bring about coupled mechanical oscillations of the second tube
Implementation Method 4
Vibronic measuring systems, such as Coriolis-mass flow measuring devices, for measuring and/or monitoring at least one measured variable of a flowing measured substance
Data Source
AI summary
A measuring system comprises a measuring transducer of vibration-type having a tube arrangement, an exciter arrangement, a sensor arrangement, and a measuring system electronics. The measuring system electronics is adapted in a first operating mode to supply current to the oscillation exciters whereby the tube arrangement executes wanted oscillations with an oscillation frequency predetermined by the driver signals and to receive and to evaluate oscillation measurement signals representing oscillatory movements of the wanted oscillations. The measuring system electronics is further adapted in a second operating mode to supply current to the oscillation exciters that only the tube executes wanted oscillations and the tube executes no wanted oscillations while nevertheless executing mechanical oscillations coupled with the wanted oscillations of the tube and to receive and to evaluate both oscillation measurement signals representing oscillatory movements of the wanted oscillations and also oscillation measurement signals representing oscillatory movements of the coupled oscillations.