Vibrating Body Fill Level Sensor Natural Frequency Control
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Solution Overview
Problem
Existing fill level or limit state measurement technologies are structurally complex and costly due to the need for additional receiver elements and sophisticated signal processing systems, particularly in vibrational limit-state sensors.
Innovation Solution
A process and device that determine the natural frequency of a vibrating body using a reception signal to modify the transmission signal, allowing for precise excitation of the vibrating body at its own natural frequency, thereby simplifying the structural design and control system by using an electromagnetic or piezoelectric vibrating system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional receiver elements and sophisticated signal processing systems are used in vibrational limit-state sensors, then measurement precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent extracts and eliminates the additional receiver element from the system. By using the transmission signal itself to determine the natural frequency and modify subsequent transmission signals, the invention removes the need for separate receiver elements while maintaining measurement capability through the existing transmission signal analysis
Solution Approach 2:
The transmission signal serves multiple functions: it excites the vibrating body and simultaneously provides information about the natural frequency through its reception signal. This multi-functionality eliminates the need for separate receiver elements, reducing device complexity while maintaining measurement precision
2Measurement precision
If additional receiver elements and sophisticated signal processing systems are used in vibrational limit-state sensors, then measurement precision is improved, but manufacturing cost increases
Solution Approach 1:
The patent removes the expensive additional receiver element and sophisticated signal processing system from the design. By utilizing the existing transmission signal to determine natural frequency and modify subsequent excitation signals, the invention reduces manufacturing cost while maintaining measurement precision through simpler components
Solution Approach 2:
The invention replaces expensive, complex receiver elements and signal processing systems with a simpler approach using the transmission signal itself. This substitution reduces manufacturing cost by using cheaper, more straightforward components that achieve the same measurement function
3Device complexity
If the transmission signal frequency is not optimized to match the vibrating body's natural frequency, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the reception signal from the vibrating body is analyzed to determine the natural frequency, and this information is used to modify the transmission signal frequency. This feedback loop ensures optimal frequency matching, improving measurement precision while maintaining relatively simple device architecture
Solution Approach 2:
The invention dynamically adjusts the transmission signal frequency parameter based on the determined natural frequency of the vibrating body. By changing the frequency parameter to match the natural frequency, the system optimizes measurement precision without requiring complex additional hardware
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
This approach reduces structural complexity and processing costs by optimizing the transmission signal to match the vibrating body's natural frequency, enabling efficient and accurate fill level or limit state measurement.
Implementation Method 1
a vibrating body is electromechanically excited into vibration by the transmission signal
Implementation Method 2
The vibrating element may be a piezoelectric element or an inductive element, such as a coil
Data Source
AI summary
Measuring a fill level or limit state is performed using an electromagnetic vibrating system, in which a transmission signal(s) is generated. A vibrating body (20) is excited into a state of vibration by the transmission signal (s); and by means of the reception signal (e) that is then produced by the vibrating body (2) the transmission signal (s) is modified for at least one subsequent excitation of the vibrating body (2), while a natural frequency (fe) of the vibrating body—or a magnitude (te) dependent on the natural frequency (fe)—is determined from the reception signal (e), and the transmission signal (s) is thereby modified.