Sea-Route Classification for Clear Collision-Avoidance Navigation
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Solution Overview
Problem
Conventional navigation assistance systems generate numerous candidate routes for avoiding collisions with other ships, making it difficult for users to understand and select the optimal route, especially in congested waters.
Innovation Solution
A navigation assistance device that groups candidate routes based on similarity and displays representative routes, using data from radar, AIS, and cameras to detect obstacles, and calculates risk indicators for easy user understanding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If all candidate routes are prompted to the user, then the user can see all possible routes, but it becomes difficult to understand and select the optimal route
Solution Approach 1:
The patent segments the large set of candidate routes into multiple groups based on similarity criteria (route shape, distance, time). Each group contains routes with comparable characteristics, and a representative route is selected from each group for display. This segmentation reduces the visual complexity from dozens of individual routes to a manageable number of grouped representations, making it easier for users to understand and select routes.
Solution Approach 2:
The patent creates simplified copies or representations of route groups through representative routes. Instead of displaying all detailed candidate routes, the system generates condensed representations that capture the essential characteristics of each group (such as typical route shape, estimated time, and distance). These representative copies allow users to grasp the main route options without being overwhelmed by the complete set of alternatives.
2Reliability
If numerous candidate routes are generated for collision avoidance, then collision prevention capability is improved, but the system complexity and information processing burden increase
Solution Approach 1:
The system segments the route generation and processing function into two stages: first, generate all candidate routes for collision avoidance; second, group and classify these routes by similarity. This segmentation allows the system to maintain comprehensive collision avoidance capabilities while adding a processing layer that organizes the results into manageable groups, reducing the overall system complexity burden on the user interface.
Solution Approach 2:
The patent introduces an intermediary classification function that acts as a mediator between the route generation module and the user interface. This intermediary groups routes by similarity and selects representatives, serving as a buffer that translates the complex output of the route generation system into a simplified format suitable for user display. This intermediary layer maintains the reliability of collision avoidance while reducing the information processing burden at the interface level.
Data Source
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AI summary
[PROBLEM] To provide a navigation assistance device that can present a candidate sea-route to a user in an easy-to-understand manner. [SOLUTION] This navigation assistance device comprises: a candidate sea-route calculation unit that calculates a plurality of candidate sea-routes for a ship; a sea-route classification unit that classifies the plurality of candidate sea-routes into a plurality of groups on the basis of the similarity therebetween, and determines a representative sea-route for each of the plurality of groups; and a display unit that displays the representative sea-route of each of the plurality of groups.