Ship Maneuvering Assistance via Operator Drowsiness Detection

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Solution Overview

Problem

In ship operations, there is a lack of effective measures to address the risk of operator drowsiness, which can lead to unsafe navigation and potential collisions, as existing systems do not adequately monitor or respond to the operator's sleepiness, especially when they leave the cockpit.

Innovation Solution

A ship maneuvering support system comprising a portable drowsiness detector worn by the operator, which sends a drowsiness detection signal to navigation devices, triggering predetermined safety operations such as changing navigation patterns or reducing engine output to prevent collisions and ensure the operator's wakefulness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If no drowsiness monitoring system is implemented, then the system remains simple and operational, but the safety and reliability of ship navigation deteriorates when operator drowsiness occurs

Engineering Contradiction:
Improvenavigation safetyVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A portable terminal serves as an intermediary device between the operator and the navigation device. The terminal includes a drowsiness detector that monitors the operator's state and communicates with the navigation device via wireless communication, enabling safety monitoring without directly complicating the navigation system's core functionality

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system enables self-monitoring of the operator's drowsiness state through automatic detection by the portable terminal and automated response actions by the navigation device, eliminating the need for continuous manual monitoring by the operator or additional crew members

Inventive Principle:
Principle #25Self-service

2Reliability

If drowsiness detection and automated response systems are added, then the reliability and safety improve, but the device complexity and cost increase

Engineering Contradiction:
Improveoperator monitoring reliabilityVSAvoidmonitoring system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The portable terminal integrates multiple functions including drowsiness detection, wireless communication, and alert generation into a single device. The navigation device also performs multiple roles including navigation, receiving drowsiness signals, and executing automated response actions, reducing the need for separate dedicated systems

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

Solution Approach 2:

The system establishes a feedback loop where the drowsiness detector continuously monitors the operator's state, transmits status signals to the navigation device, and triggers automated responses when drowsiness is detected, creating a closed-loop safety system that adapts to real-time operator conditions

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11263886B2Ship maneuvering assistance system, ship control device, ship control method, and program
Publication Date: 2022.03.01 FURUNO ELECTRIC CO LTD
  • US11263886B2 patent drawing
  • US11263886B2 patent drawing
  • US11263886B2 patent drawing

AI summary

In order to provide a ship maneuvering support system capable of coping with drowsiness of an operator, a ship maneuvering support system includes: a portable terminal carried by a ship's operator for detecting the operator's drowsiness, and a navigation device used for navigating the ship and performing a predetermined operation when the operator's drowsiness is detected.