Navigation Assisting Device Priority Data Output Control
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Solution Overview
Problem
Navigation assisting devices face delays in outputting target object data due to limited serial communication rates and increased data volumes when processing multiple target objects from both TT and AIS systems, leading to practical delays in data updates.
Innovation Solution
A navigation assisting device is designed with a TT information acquiring module, an AIS information acquiring module, a maximum-number-of-output-data determination module, a priority determination module, and an output control module to reduce the number of output data and prioritize target object data based on predetermined rules, ensuring timely data output without delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all target object data from both TT and AIS are outputted to the outside, then the completeness of data output is improved, but the output cycle becomes very long causing large delays
Solution Approach 1:
The patent extracts only the essential and high-priority target object data from the complete dataset. The selection module selectively outputs only certain target object data based on predetermined selection criteria, rather than outputting all available data. This extraction approach maintains data completeness for critical information while significantly reducing output volume and delay.
Solution Approach 2:
The patent applies different quality levels to different data elements by prioritizing certain target objects over others. The selection module evaluates each target object against selection criteria (such as collision risk, distance, speed) and outputs data with varying priority levels. This ensures that locally critical data (high-priority targets) are outputted with higher quality and timeliness, while less critical data are selectively reduced.
2Productivity
If the serial communication rate is increased to output more data faster, then the data output speed is improved, but the communication system complexity and cost increase
Solution Approach 1:
The patent changes the parameter of data volume rather than communication rate. By reducing the number of target object data items outputted through selective filtering, the system maintains the existing serial communication rate while achieving faster effective data output. This parameter change approach avoids the complexity and cost of upgrading communication hardware.
3Quantity of substance
If the number of detectable target objects is increased to handle more AIS and TT data, then the coverage of monitoring is improved, but the processing load becomes too high
Solution Approach 1:
The patent extracts only the necessary subset of target object data for output, rather than processing and outputting all detected targets. The selection module filters the complete set of detected target objects (from both AIS and TT systems) to identify only those meeting predetermined selection criteria. This extraction significantly reduces the processing load for data output operations while maintaining comprehensive detection capabilities.
Data Source
AI summary
This disclosure provides a navigation assisting device, which includes a TT information acquiring module for acquiring target object data by performing target tracking based on an echo received by a radar antenna, an AIS information acquiring module for acquiring target object data based on a Universal Shipborne Automatic Identification System, a maximum-number-of-output-data determination module for determining a maximum number of output data that is the number of target object data that is outputable while the radar antenna revolves once, a priority determination module for performing a priority determination according to a predetermined rule, for the target object data acquired by the TT information acquiring module and the target object data acquired by the AIS information acquiring module, and an output control module for outputting the target object data fewer than the maximum number of output data according to the priorities while the radar antenna revolves once.