Wireless Rig Tension Monitor Using Vibration Analysis
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Solution Overview
Problem
Conventional methods for measuring rig tension in sailboats are expensive, invasive, and lack real-time feedback, making it difficult to optimize sailing performance dynamically.
Innovation Solution
A wireless monitor device with a motion sensor and processor that attaches to rigging members, using a vibrating wire principle to measure tension, providing real-time data to a controller for instant feedback and adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods for measuring rig tension are used, then measurement capability is provided, but the system becomes expensive and invasive
Solution Approach 1:
The patent replaces complex mechanical tension measurement systems with a simplified system using motion sensors (accelerometers) and signal processing. The motion sensors detect vibrations of the rigging members, and through spectral analysis, the system derives tension information without requiring direct mechanical force measurement, thereby reducing device complexity while maintaining measurement capability
Solution Approach 2:
The patent introduces motion sensors as intermediary devices that indirectly measure tension by detecting vibrations caused by tension changes in the rigging members. Instead of directly measuring force, the system uses vibration characteristics as an intermediary parameter to infer tension, simplifying the measurement approach
2Measurement precision
If conventional tension measurement methods are used, then tension data is obtained, but real-time feedback is lacking
Solution Approach 1:
The patent implements continuous monitoring by having motion sensors constantly detect vibrations of the rigging members and the processor continuously analyze the vibration signals. This continuous data stream provides real-time tension information, eliminating the time delays associated with conventional periodic or manual measurement methods
Solution Approach 2:
The system establishes a feedback loop where tension data is continuously measured, processed, and made available to sailors in real-time. This immediate feedback enables sailors to understand the current tension state and make timely adjustments to optimize sailboat performance
3Ease of operation
If manual tension adjustments are made, then rig tension can be changed, but performance optimization is difficult
Solution Approach 1:
The system provides quantitative feedback by measuring and displaying the actual tension in each rigging member in real-time. This information feedback enables sailors to make informed decisions about tension adjustments, understanding exactly how tension changes affect mast bend and sail shape, thereby improving performance optimization capability
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 offers cost-effective, non-invasive, and real-time monitoring of rig tension, allowing sailors to optimize sailing performance by quantifying changes in tension and forces, improving trim and reducing drag.
Implementation Method 1
A wireless monitor device with a motion sensor and processor that attaches to rigging members, using a vibrating wire principle to measure tension
Data Source
AI summary
A monitor device includes a memory, a hardware mount configured to attach to a rigging member, a motion sensor configured to detect a first motion characteristic of the rigging member, and a processor operatively coupled to the memory and to the motion sensor. The processor is configured to receive the first motion characteristic from the motion sensor. The processor is further configured to send the first motion characteristic to a controller. The controller is configured to receive a second motion characteristic generate an output for a display based on the first motion characteristic and the second motion characteristic.