Method for detecting degree of risk of ship collision

Abstract

The invention relates to the technical field of ship collision avoidance, in particular to a method for detecting the degree of risk of ship collision on the basis of an evidential reasoning theory, wherein the method is used for assisting ship drivers in making decisions and guaranteeing safe navigation of ships. The method for detecting the degree of risk of ship collision includes the steps that dynamic data of navigation of threatening ships are acquired through an automatic identification system (AIS) of a ship, values of influential factors are calculated, subjection degree values of all the factors are calculated, weights are allocated to five factors through a hierarchical classification method, and confidence coefficient values of all the factors on the corresponding evaluation levels are calculated; confidence coefficient vectors of the threatening ships on the evaluation levels are calculated; degrees of threat of the threatening ships are crystallized, and CRI values of the threatening ships are obtained; the obtained CRI values are output and displayed on a comprehensive ship display system. According to the method for detecting the degree of risk of ship collision, while the uncertainty of obtained data of the threatening ships and the uncertainty of expert experience are fully considered, the degrees of threat of the threatening ships to the current ship are reasonably evaluated through superiority of the evidential reasoning theory for representing and fusing uncertain information.

Description

technical field [0001] The invention relates to the technical field of ship collision avoidance, in particular to a method for detecting ship collision risk based on evidence reasoning theory, which assists ship drivers in making decisions and ensures ship navigation safety. Background technique [0002] With the rapid development of the world's shipping economy, the shipping industry undertakes more than 90% of global trade cargo transportation. The increase in size and speed of ships and the increase in the density and encounter rate of ships in navigable waters have led to frequent collision accidents in busy navigable waters and waters near ports, resulting in huge property losses and casualties. Therefore, the issue of ship navigation safety has become a hot issue for experts and scholars to study. In the field of ship safety navigation and ship collision avoidance, the research and calculation of reasonable and effective ship collision risk index (CRI) is very importa...

AI Technical Summary

Problems solved by technology

The problem with the neural network method is that it needs to store a large amount of experience knowledge of collision avoidance experts, as well as the training data of various factors affecting CRI, and carry out a large number of samples for learning, and its real-time performance cannot be well satisfied.

Images