Ship Collision Avoidance Bumper Optimization by Simulation
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Solution Overview
Problem
Existing ship collision avoidance systems lack the ability to determine a suitable or optimum bumper setting value, leading to inaccuracies in collision avoidance support and automatic ship maneuvering, as the bumper shape and size are not sufficiently examined or verified quantitatively.
Innovation Solution
A ship maneuvering calculation device that generates various bumper settings through simulation, repeatedly executes simulations with different parameter values, calculates evaluation values, and determines an optimum bumper setting to improve the accuracy of collision avoidance support and automatic ship maneuvering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed bumper setting value is used in ship collision avoidance systems, then the system is simple to operate and implement, but the accuracy of collision avoidance support and automatic ship maneuvering is insufficient because the bumper shape and size are not optimized for different conditions
Solution Approach 1:
The patent applies parameter changes by systematically varying bumper parameters (shape, size, position) through simulation to find optimal values. The simulation calculates evaluation values for different bumper settings and determines optimal parameters based on collision avoidance performance, thereby improving accuracy without requiring manual parameter adjustment during operation.
Solution Approach 2:
The patent implements preliminary action by pre-determining optimal bumper settings through simulation before actual ship operation. The simulation phase performs the complex parameter optimization work in advance, so that during actual collision avoidance support, the system can directly use the pre-calculated optimal bumper parameters without real-time computation complexity.
2Reliability
If the bumper size is increased to improve collision detection coverage, then the detection capability is enhanced, but the false alarm rate increases due to reduced precision in collision risk assessment
Solution Approach 1:
The patent applies local quality by optimizing different regions of the bumper differently. The simulation determines optimal local parameters for different parts of the bumper based on collision risk patterns, allowing the system to have enhanced detection coverage in critical areas while maintaining precision in risk assessment through region-specific parameter optimization.
Data Source
AI summary
A technique capable of determining a suitable or optimum exclusive region (bumper) setting value and improving the accuracy and others of ship collision avoidance support and automatic ship maneuvering as a result is provided. A ship maneuvering calculation device 1 calculates setting information of an automatic ship collision avoidance program 3 for achieving a function of an automatic ship collision avoidance device 2 of a vessel. The ship maneuvering calculation device 1 generates a plurality of exclusive region values 103 that are different in at least a shape and a size as parameter values for an exclusive region set around a vessel, repeatedly executes simulation calculation using the automatic ship collision avoidance program (a copy 13) while changing a condition 102 and the parameter values, calculates an evaluation value 105 corresponding to the parameter value, based on the result of the simulation calculation, determines an optimum value 106 of the exclusive region, based on the evaluation value, and sets the optimum value 106 of the exclusive region to the automatic ship collision avoidance program 3.