Marine Vessel Sensor Positioning via Frequency-Domain Motion Analysis
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Solution Overview
Problem
The accuracy of translational movement sensors on marine vessels is dependent on their position, leading to uncertainties and inaccurate results without dedicated measuring devices.
Innovation Solution
A computer system with processing circuitry that utilizes time-varying rotational and translational movement signals to determine the position of translational movement sensors by converting these signals to frequency domains, allowing for the determination of reference frequency information to calculate the sensor's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the position of the translational movement sensor is not accurately determined, then the sensor can be installed flexibly, but the measurement accuracy deteriorates
Solution Approach 1:
The system uses feedback by continuously monitoring the relationship between rotational movement (from gyro sensor) and translational movement (from accelerometer) to automatically determine sensor position. The processor compares expected sensor behavior at different positions with actual measurements, providing feedback that enables automatic position identification without requiring manual positioning or dedicated measuring devices.
Solution Approach 2:
The translational movement sensor system performs self-positioning by utilizing its own measurement data combined with rotational movement data. The system determines the sensor's position on the marine vessel autonomously through signal processing and pattern recognition, eliminating the need for external dedicated measuring devices or manual intervention.
2Measurement precision
If dedicated measuring devices are used to determine sensor position, then position accuracy improves, but device complexity and cost increase
Solution Approach 1:
The system makes existing sensors (accelerometer and gyro sensor) multi-functional by using them for both their primary purposes (measuring translational and rotational movement) and for determining the accelerometer's position on the vessel. This eliminates the need for dedicated position-measuring devices while fully utilizing the data already being collected by the movement sensors.
Solution Approach 2:
The existing sensor system serves itself by using its own measurement data to determine its configuration. The processor analyzes the relationship between rotational and translational movement signals to identify which position the accelerometer occupies, making the system self-configuring without external measurement equipment.
3Measurement precision
If frequency domain analysis is used to determine sensor position, then position determination accuracy improves, but computational requirements increase
Solution Approach 1:
The system applies partial action by focusing frequency domain analysis on specific reference frequencies that are most informative for position determination. Rather than analyzing the entire frequency spectrum, the processor targets particular frequency components where the relationship between rotational and translational movement most clearly indicates sensor position, reducing computational load while maintaining accuracy.
Data Source
AI summary
A method for determining information indicative of a position of a translational movement sensor on a marine vessel is provided. The marine vessel extends in a longitudinal direction along a marine vessel longitudinal axis, the longitudinal direction preferably corresponds to an intended direction of travel of the marine vessel. The marine vessel extends in a vertical direction along a marine vessel vertical axis and in a transversal direction along a marine vessel transversal axis. The transversal axis is perpendicular to each one of the longitudinal axis and the vertical axis.