A method for assessing the risk between vessels in inland navigation

By constructing speed obstacle zones and calculating DVOI and TVOI, the degree of danger between ships is assessed from two dimensions: heading and speed. This solves the problem of the lack of heading dimension assessment in existing technologies and improves the accuracy and safety of the assessment.

CN115293596BActive Publication Date: 2026-03-03JILIN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-10
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

Existing ship hazard assessment methods lack hazard assessment from the course dimension, leading to premature or late warnings in some navigation scenarios. Furthermore, they ignore ship size factors, reducing the accuracy of assessment results.

Method used

The vessel and other vessels are abstracted as two rectangular targets. The speed obstacle zone is constructed using the speed obstacle method. The danger level is given from the two dimensions of course and speed by calculating the degree of intrusion (DVOI) and time of intrusion (TVOI) of the speed obstacle zone.

Benefits of technology

It overcomes the shortcomings of existing methods that lack a heading dimension in the assessment, improves the accuracy of the assessment results, and avoids alarms that are too early or too late, especially in the assessment of the degree of danger when ships are navigating in narrow waterways.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a method for evaluating the risk degree between ships in inland navigation, which uses two indexes of speed obstacle area invasion degree and speed obstacle area invasion time to give the risk degree value from two dimensions of heading and speed respectively. The method makes up the defect of the current ship risk degree evaluation method that lacks of risk degree evaluation from the heading dimension, so that the method can be applied to the ship navigation risk degree evaluation in a narrow waterway.
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Citation Information

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