Vibronic Sensor Phase Shift Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vibronic sensors face challenges in maintaining measurement accuracy due to phase shifts caused by electronic components, which are influenced by temperature, pressure, and external vibrations, leading to reduced accuracy in determining process variables like viscosity and density.
Innovation Solution
A compensation device that includes a bridging unit, signal generation unit, and phase detection unit to determine and correct phase shifts caused by electronic components, using test excitation signals and phase compensation instructions to adjust the phase shift between excitation and receive signals, thereby improving measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If phase shifts caused by electronic components are not compensated, then the device complexity remains low, but the measurement precision deteriorates due to temperature, pressure, and vibration influences
Solution Approach 1:
The system performs self-calibration by automatically determining phase shifts caused by electronic components and compensating for them without requiring external calibration equipment or manual adjustment. The compensation device uses the sensor's own excitation signal path to measure and correct phase errors, enabling the system to maintain measurement accuracy autonomously
Solution Approach 2:
The phase compensation is performed in advance during a calibration phase before actual measurements are taken. The system determines the phase shifts caused by electronic components and stores compensation values that are subsequently applied during measurement operations, ensuring accuracy is established beforehand rather than corrected in real-time
2Measurement precision
If complex calibration procedures are used to correct phase shifts, then the measurement precision improves, but the ease of operation deteriorates due to calibration complexity
Solution Approach 1:
The calibration process is automated and performed by the system itself without requiring external calibration equipment or manual intervention. The compensation device automatically determines phase shifts through signal processing and applies corrections autonomously, making the calibration process as simple as powering on the device
Solution Approach 2:
The patent replaces manual mechanical calibration procedures with an automated electronic system that uses signal generation, phase detection, and digital compensation. Instead of physical adjustment mechanisms, the system uses electronic signal processing to determine and correct phase shifts, significantly simplifying the operation
3Reliability
If phase shifts are not compensated for temperature and pressure changes, then the ease of operation remains high, but the reliability deteriorates under varying environmental conditions
Solution Approach 1:
The system continuously monitors phase shifts caused by electronic components and applies real-time compensation based on detected deviations. The compensation device uses feedback from the excitation signal path to detect phase errors and automatically adjusts compensation parameters to maintain measurement accuracy under varying temperature and pressure conditions
Solution Approach 2:
The system adapts compensation parameters based on changing environmental conditions such as temperature and pressure. By dynamically adjusting the phase compensation values according to environmental parameter changes, the system maintains reliability across different operating conditions without requiring complex environmental sensing and control mechanisms
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 compensation device enhances measurement accuracy by automatically determining and correcting phase shifts, reducing the need for complex calibrations and improving the sensor's insensitivity to external vibrations and component tolerances.
Implementation Method 1
The driving/receiving unit, often in the form of an electromechanical transducer unit that can, in turn, be a piezoelectric drive
Implementation Method 2
the driving/receiving unit can receive the mechanical oscillations of the mechanically oscillatable unit and convert them into an electrical receive signal
Implementation Method 3
For example, for a resonant oscillation, the oscillating circuit condition, according to which the sum of all amplifications in the oscillating circuit, or the amplification factor, is 1, and all phases occurring in the oscillating circuit result in a multiple of 360°
Data Source
AI summary
The invention relates to a compensation device for the compensation of a phase shift caused a component of an electronic system unit of a vibronic sensor. The compensation device includes a bridging unit for the electrical bridging of at least the electromechanical converter; a signal generator for generating a test excitation signal; a phase detection unit for determining the phase shift between the test excitation signal and a test receive signal that passes through the bridging unit and the component of the electronic system unit; and a computer unit which determines a phase compensation instruction from the first phase shift.