Ship Collision Risk Routing with Adaptive Sensor Fusion
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Solution Overview
Problem
Conventional navigation aid devices for ships lack the ability to accurately calculate collision risks and provide flexible avoidance routes, as they often rely on incomplete sensor installations and fail to integrate sensor data effectively, leading to suboptimal navigation and safety.
Innovation Solution
A method and device that calculate an available velocity area based on ship maneuvering performance, identify potential collision areas, and determine collision risks using a combination of available velocity and obstacle areas, while identifying installed sensors to derive an avoidance route.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors (RADAR, AIS, ENC, GPS) are used to calculate collision risk, then collision risk calculation accuracy is improved, but device complexity increases because not all ships have all sensors installed and the system must recognize which sensors are installed
Solution Approach 1:
The navigation aid device is designed to universally support multiple sensor types (RADAR, AIS, ENC, GPS) through a unified sensor recognition and data integration framework. The system automatically identifies which sensors are installed on a given ship and integrates only the available sensor data, making the device adaptable to different sensor configurations without requiring all sensors to be present.
Solution Approach 2:
The system dynamically adjusts its operation based on sensor availability by changing the parameter set used for collision risk calculation. When certain sensors are not installed, the system modifies the calculation parameters to work with the available sensor data, maintaining accurate collision risk assessment while adapting to varying device configurations.
2Reliability
If sensor data integration is performed to provide advanced navigation functions, then navigation safety is improved, but ease of operation deteriorates because the system must automatically recognize installed sensors and integrate data from multiple sources
Solution Approach 1:
The system performs self-configuration by automatically recognizing which sensors are installed on the ship and setting up the appropriate data integration framework without manual intervention. The sensor recognition function autonomously identifies available sensors and configures the collision risk calculation parameters, eliminating the need for operators to manually configure sensor connections.
Solution Approach 2:
The system performs preliminary sensor recognition and data integration setup before collision risk calculation begins. By pre-identifying installed sensors and establishing the appropriate data processing framework in advance, the system ensures smooth operation during actual navigation without requiring operators to manually configure sensor integration.
3Reliability
If a fixed avoidance route is provided according to International Regulations, then compliance with maritime laws is improved, but adaptability to actual navigation situations deteriorates because the route cannot be flexibly adjusted
Solution Approach 1:
The avoidance route is transformed from a static, fixed path into a dynamic, adaptable route that automatically adjusts based on real-time collision risk calculations. The system continuously monitors the navigation situation and modifies the avoidance route parameters (such as turning angles, speed adjustments, and route deviations) to adapt to changing conditions while maintaining compliance with International Regulations.
Solution Approach 2:
The system changes the parameters of the avoidance route dynamically based on the calculated collision risk and current navigation situation. Instead of following a predetermined fixed route, the system adjusts route parameters such as position, speed, and direction in real-time to create a flexible avoidance path that adapts to actual maritime conditions while maintaining regulatory compliance.
Data Source
AI summary
A method of calculating a collision risk of a ship according to an embodiment of the present disclosure may include: calculating an available velocity area based on maneuvering performance of a host ship; calculating a velocity obstacle area where there is a possibility of collision between an object and the host ship; and calculating a collision risk based on at least one of the available velocity area, the velocity obstacle area, and a preset weight.