Variable Area Flowmeter Bi-Stable Display Adaptation
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Solution Overview
Problem
Purely mechanical variable area flowmeters are manufactured and calibrated for specific applications, leading to reduced measuring accuracy when process parameters deviate, limiting their flexibility and reliability.
Innovation Solution
Integration of a bi-stable display, such as e-paper or liquid crystal displays, that can be modified with low energy to adapt to different measuring situations, combined with a mechanically deflectable pointer element, allowing for flexible operation and accurate representation of various process parameters without continuous energy supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a purely mechanical variable area flowmeter is manufactured and calibrated for a specific application, then the device structure remains simple and maintenance-free, but the measuring accuracy decreases when process parameters deviate from the calibration conditions
Solution Approach 1:
The patent applies dynamics by making the display unit adaptable and reconfigurable. The display unit can be recalibrated and reconfigured for different measuring ranges and process parameters, transforming a static mechanical device into a dynamic system that adapts to changing measurement requirements. This allows the flowmeter to maintain high measuring accuracy across different applications without changing the mechanical measurement mechanism.
Solution Approach 2:
The patent implements parameter changes by allowing the display unit to be recalibrated with different scaling parameters and measurement ranges. The display can be adjusted to show different value scales, units, and measurement ranges, enabling the same mechanical device to accurately measure different process parameters and flow ranges by changing only the display parameters rather than the mechanical components.
2Adaptability or versatility
If the display unit is recalibrated for different measuring ranges, then the adaptability to different applications improves, but the device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the display unit to be recalibrated and reconfigured without requiring changes to the mechanical measurement system. The recalibration process is simplified to involve only the display unit, which can be independently adjusted for different measuring ranges and parameters. This self-contained recalibration capability adds adaptability while minimizing the increase in overall device complexity.
Solution Approach 2:
The patent segments the flowmeter into two independent parts: the mechanical measurement system (float and measuring tube) and the electronic display unit. This segmentation allows the display unit to be independently recalibrated and reconfigured for different applications without affecting the mechanical measurement components, thereby increasing adaptability while keeping the overall device complexity manageable through modular design.
3Adaptability or versatility
If an electronic display is used to show measured values, then the adaptability to different measuring situations improves, but the energy consumption increases
Solution Approach 1:
The patent applies periodic action by using an e-paper display that updates the displayed information only when necessary (when measurement parameters or ranges change) rather than continuously refreshing. The e-paper technology maintains the displayed information without requiring continuous energy supply, consuming energy only during state changes. This periodic update approach enables adaptability while significantly reducing energy consumption compared to continuous display refreshment.
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 reliable and flexible operation by maintaining a purely mechanical measurement mode while allowing for dynamic adaptation of displayed information to different conditions, minimizing measurement errors and extending the measuring range.
Implementation Method 1
the display unit (3) includes at least one bi-stable display (6) which only requires an energy supply in order to modify the displayed representation (16) and/or to restore the representation
Data Source
AI summary
A variable area flowmeter having a float and having a display unit, the display unit includes a pointer element, the pointer element is connected directly or indirectly to the float such that the pointer element is mechanically deflected by the float during the measuring process. The variable area flowmeter that operates particularly reliably and is flexibly applicable at the same time is achieved in that the display unit comprises at least one bi-stable display which only requires an energy supply in order to modify the displayed representation and/or to restore the representation.