Watercraft Automatic Anchoring Control System

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Solution Overview

Problem

Existing systems for controlling anchored watercraft lack the ability to actively correct for slippage and incorrect anchoring, leading to safety concerns and increased effort for crew members.

Innovation Solution

A control system comprising a controller and measuring means on the watercraft, which measures pulling forces, lateral forces, and rope position to automatically adjust the watercraft's orientation and anchoring to maintain stability and prevent slippage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If anchor alarms and monitoring devices are used to detect slippage, then safety monitoring capability is improved, but device complexity and crew effort increase

Engineering Contradiction:
Improvesafety monitoring capabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple monitoring functions (pulling force measurement, lateral force measurement, rope position detection, GPS positioning) into a single integrated control system that automatically processes data and triggers corrective actions, eliminating the need for separate alarm devices and reducing overall system complexity

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The system automatically detects anchoring issues, determines corrective actions, and executes them through automated drive and steering control, enabling the watercraft to self-correct anchoring problems without requiring crew intervention or additional manual monitoring devices

Inventive Principle:
Principle #25Self-service

2Adaptability or versatility

If the watercraft drifts around the anchor on a long anchor chain, then anchoring flexibility is improved, but position measurement accuracy deteriorates

Engineering Contradiction:
Improveanchoring flexibilityVSAvoidposition measurement accuracy
Core Design Contradiction:
Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The system continuously measures the actual position of the watercraft using GPS and compares it with the desired position relative to the anchor, using this feedback to automatically adjust drive and steering commands to maintain accurate positioning even when drifting on a long anchor chain

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The control system performs multiple functions simultaneously: it monitors position, calculates drift, determines corrective actions, and executes automated steering and propulsion control, making the system adaptable to various anchoring scenarios while maintaining measurement accuracy

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If anchor chain length is increased to allow drifting, then anchoring versatility is improved, but anchor load measurement and slippage detection become less accurate

Engineering Contradiction:
Improveanchoring versatilityVSAvoidanchor load measurement accuracy
Core Design Contradiction:
Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent replaces mechanical measurement methods (such as physical indicators on the anchor chain) with electronic sensing systems that use force sensors, GPS positioning, and computational algorithms to accurately measure anchor load and detect slippage regardless of chain length

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system introduces an intermediary computational layer that processes data from multiple sensors (force measurement, position GPS, rope position detection) to indirectly but accurately determine anchor load and slippage conditions, maintaining measurement precision even with extended anchor chains

Inventive Principle:
Principle #24Intermediary (Mediator)

4Reliability

If automatic control systems are implemented to correct anchoring issues, then safety and stability are improved, but device complexity increases

Engineering Contradiction:
Improvesafety and stabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent integrates force measurement sensors, position detection systems, GPS receivers, and automated drive/steering control into a single unified control system that processes all inputs and executes corrective actions automatically, reducing the need for separate complex subsystems

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The control system automatically detects anchoring problems, determines appropriate corrective actions based on pre-programmed logic, and executes them through automated control of the watercraft's drive and steering means, eliminating the need for additional manual intervention systems or complex human-machine interfaces

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS20250121916A1Watercraft with automatic control, method for controlling an anchored watercraft, and control system for a watercraft
Publication Date: 2025.04.17 HUNTEMULLER HARTWIG
  • US20250121916A1 patent drawing
  • US20250121916A1 patent drawing
  • US20250121916A1 patent drawing

AI summary

The invention relates to a watercraft (1) with automatic control, where, automatically, a force, in particular, a pulling force on a fastening rope is measured and a controlling of the drive and/or a steering means is provided to counteract the force or, e.g., to limit the same.