Liquid Column Inclination Monitoring for Drift-Free Tower Measurement
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Solution Overview
Problem
Existing inclination measurement systems for tall structures suffer from drift over time, require frequent calibration, have shorter lifespans than the structures they monitor, and are labor-intensive and costly to maintain, especially in inaccessible locations like sea-based wind turbines.
Innovation Solution
An inclination measuring system using a liquid-based indicator with two liquid columns and a camera device to image liquid surfaces, processing device to determine inclination changes, and a transmitter for remote monitoring, which reduces drift and maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electronic sensors are used for inclination measurement, then measurement precision is improved, but device complexity and maintenance requirements increase
Solution Approach 1:
The patent replaces complex electronic sensors with a simple mechanical liquid column system. The liquid columns respond to inclination changes through gravitational force, providing measurement capability without electronic components, thereby reducing device complexity while maintaining measurement functionality.
Solution Approach 2:
The patent uses optical imaging to create a visual copy of the liquid column positions. The camera captures images of the liquid columns, and the processing device analyzes these images to determine inclination, replacing direct electronic sensing with an optical copying and analysis approach.
2Measurement precision
If electronic sensors are used for inclination measurement, then measurement precision is improved, but reliability over time deteriorates due to drift
Solution Approach 1:
The patent replaces electronic sensors prone to drift with a mechanical liquid column system based on gravitational principles. The liquid columns provide a stable, drift-free reference that does not require calibration over time, significantly improving long-term reliability.
Solution Approach 2:
The patent changes the measurement parameter from electrical signals (prone to drift) to liquid column positions governed by gravity (stable over time). This parameter change from electronic to mechanical/gravitational domain eliminates the drift issue inherent in electronic sensors.
3Measurement precision
If electronic sensors are used for inclination measurement, then measurement precision is improved, but duration of action deteriorates due to shorter sensor lifetime
Solution Approach 1:
The patent replaces electronic sensors with limited lifetimes with a mechanical liquid column system and solid-state camera. The liquid columns have no consumable parts and the camera has significantly longer operational life, enabling the measurement system to last the entire lifetime of the monitored structure.
Solution Approach 2:
The patent uses inexpensive liquid columns that can be easily replaced if needed, rather than expensive electronic sensors with limited lifetimes. The liquid is a simple, replaceable material that does not degrade over time like electronic components.
4Measurement precision
If electronic sensors are used for inclination measurement, then measurement precision is improved, but ease of operation deteriorates due to calibration requirements
Solution Approach 1:
The patent replaces electronic sensors requiring calibration with a mechanical liquid column system based on gravitational principles. The liquid columns naturally align with gravity, providing an automatic reference that eliminates the need for manual calibration operations.
Solution Approach 2:
The liquid column system is self-calibrating through gravitational force. The liquid automatically finds its equilibrium position based on gravity, providing a self-service calibration mechanism that eliminates the need for external calibration operations.
5Measurement precision
If electronic sensors are used for inclination measurement, then measurement precision is improved, but loss of time increases due to frequent calibration and replacement
Solution Approach 1:
The patent replaces electronic sensors requiring frequent calibration and replacement with a mechanical liquid column system. The liquid columns provide continuous, maintenance-free operation, eliminating time loss associated with calibration schedules and sensor replacement.
Solution Approach 2:
The liquid column system provides continuous inclination measurement without interruption for calibration or replacement. The measurement action continues uninterrupted throughout the operational lifetime, eliminating downtime associated with electronic sensor maintenance.
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 system provides accurate, long-term inclination measurements with reduced drift, eliminates the need for frequent calibration, and lowers maintenance and operational costs, while allowing remote monitoring of multiple structures from a single site.
Implementation Method 1
a liquid-based indicator (110), configured to indicate an inclination change thereof by a displacement of liquid in the liquid-based indicator
Data Source
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AI summary
The present invention relates to an inclination measuring system (100). The system (100) comprising, a (110), configured to indicate an inclination change thereof by a displacement of liquid (112) in the liquid-based indicator (110), the liquid-based indicator (110) comprising two liquid columns (120a-b) in liquid communication with each other, each liquid column (120a-b) comprising a liquid volume (114a-b1) and defining a liquid surface (116a-b), a camera device (130) configured to image the respective liquid surfaces (116a-b) of the respective liquid columns (120a-b) and to output image data indicative of the respective liquid surfaces (116a-b), and a processing device (150) configured to receive the image data, the processing device (150) being configured to register an inclination change of the liquid-based indicator (110) by determining a change of levels of the respective liquid surfaces (116a-b) and to output a signal indicative of the inclination change of the liquid-based indicator (110). A land or sea-based tower structure (200, 300) including the system (100) is also provided.