Ship Navigation Assistance With Adaptive Data Frequency
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Solution Overview
Problem
Conventional navigation systems for ships, particularly manned autonomous ships with reduced manpower, face challenges in determining the need for external assistance and efficiently sharing navigation-related data to facilitate effective remote monitoring and assistance.
Innovation Solution
A navigation assistance system comprising an onboard system and a remote monitoring device that calculates an assistance necessity level based on navigation-related data, transmits this level and data to the remote device, and adjusts transmission frequency accordingly, enabling remote captains to provide targeted assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If navigation-related data is transmitted at a fixed high frequency, then real-time monitoring capability is improved, but communication bandwidth consumption increases
Solution Approach 1:
The patent applies dynamics by making the data transmission frequency adjustable rather than fixed. The transmission frequency is dynamically changed based on the assistance necessity level calculated from navigation-related data, allowing the system to adapt between high monitoring frequency and low bandwidth consumption modes
Solution Approach 2:
The patent changes the parameter of transmission frequency based on the assistance necessity level. When the assistance necessity level is high, the transmission frequency increases to provide real-time monitoring; when the level is low, the frequency decreases to reduce bandwidth consumption
2Measurement precision
If navigation-related data is transmitted continuously, then monitoring accuracy is improved, but communication energy consumption increases
Solution Approach 1:
The patent implements periodic action by transmitting navigation-related data at intervals rather than continuously. The transmission is performed periodically based on the assistance necessity level, providing sufficient monitoring accuracy when needed while saving energy during periods when assistance is not required
Solution Approach 2:
The patent changes the transmission parameter (frequency) based on the assistance necessity level. This allows the system to adjust communication energy consumption according to actual monitoring needs, transmitting data frequently when assistance is needed and rarely when it is not
3Measurement precision
If the assistance necessity level is calculated based on multiple navigation parameters, then assistance accuracy is improved, but calculation complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the calculation of assistance necessity level into separate steps: first acquiring navigation-related data (position, speed, course, etc.), then calculating the assistance necessity level based on this data. This segmentation allows for modular processing and reduces overall calculation complexity
Data Source
AI summary
A navigation assistance system includes a navigation assistance device installed on a ship and a remote monitoring device installed outside the ship. The navigation assistance device includes processing circuitry configured to: acquire navigation-related data related to navigation of the ship; calculate an assistance necessity level indicating a degree to which the ship requires assistance from outside, based on the navigation-related data; and transmit the assistance necessity level to outside of the ship. The remote monitoring device includes processing circuitry configured to receive the assistance necessity level transmitted by the navigation assistance device.