Tidal Information Overlay on Marine Chart Displays
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Solution Overview
Problem
Conventional AR-based navigation systems struggle to intuitively display tidal information from external sources on a display screen, requiring separate devices and causing inefficiency and sub-optimal decision-making for marine vessel navigation.
Innovation Solution
A tidal information display device that integrates tidal information onto a single display screen using a position measurement module, geographical information selection, tidal information receiving, and display modules, superimposing graphical user interfaces (GUIs) such as pop-up balloons and mini-gauges to provide intuitive tidal information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If tidal information is displayed graphically using separate display devices, then tidal information can be displayed, but device complexity and cost increase
Solution Approach 1:
The patent combines tidal information display with the existing maritime chart display on the same screen. The tidal information is superimposed as graphical elements (arrows, gauges, pop-up balloons) on top of the chart, eliminating the need for separate display devices while maintaining full visibility of both chart and tidal data
Solution Approach 2:
The display device is designed to perform multiple functions simultaneously: displaying maritime charts for navigation and overlaying tidal information for tidal awareness. This multi-functional approach allows a single device to replace what would traditionally require separate specialized displays
2Device complexity
If tidal information graphs are displayed on the same display device as charts, then device quantity is reduced, but the display area required for legible graphs increases
Solution Approach 1:
The tidal information is displayed with varying levels of detail in different locations on the screen. Pop-up balloons provide detailed information when users interact with specific areas, while mini-gauges and arrows provide summary information in other areas, allowing legible presentation without requiring uniform large-area allocation across the entire display
3Loss of information
If tidal information is displayed graphically, then tidal data can be presented, but interpretation requires keen observation and delays decision-making
Solution Approach 1:
The patent uses color-coded visual indicators to represent tidal information. Arrows change color or orientation to indicate tidal direction, gauges use color gradients to show tidal height levels, and pop-up balloons use color coding for different tidal states. This visual encoding allows navigating personnel to quickly comprehend tidal conditions without needing to carefully study complex graphical data
Solution Approach 2:
The patent creates simplified visual representations (icons, symbols, mini-gauges) that copy the essential information from complex tidal data. These visual copies provide intuitive understanding of tidal conditions without requiring interpretation of detailed graphical charts, enabling rapid decision-making
Data Source
AI summary
A tidal information display device for a movable body includes a position measurement module configured to detect a position of the movable body, a geographical information selection module configured to determine geographic information to be displayed on a display screen based on the detected position, a tidal information module configured to receive and store tidal information based on the detected position, and a tidal information display module configured to generate display data for displaying a graphical user interface (GUI) at a predetermined position on the display screen. The GUI is configured for showing the tidal information including at least one of: a present height of a tide, a high tide time, a low tide time, and a position of the tide.