Vehicle Area Information Storage for Rapid Stop Warning
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Solution Overview
Problem
Existing systems face challenges in rapidly providing warnings to following vehicles when a vehicle stops on a highway, as they require time to determine the positional relationship using map information, making immediate warnings difficult.
Innovation Solution
An information processing system that acquires and stores traveling area information, allowing for rapid determination of the need for a warning and immediate action upon receiving a stop signal from another vehicle, using units like an information acquisition unit, entry determination unit, reception unit, relation determination unit, and processing execution unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calculation based on map information is performed to determine positional relationship, then accuracy of position determination is improved, but response time deteriorates
Solution Approach 1:
The system pre-acquires and stores traveling area information (road geometry, coordinates, and area identifiers) in the area information storage unit before it is needed for emergency response. When a stop signal is received, the system only needs to compare the current position with pre-stored area information rather than performing complex map calculations, thus achieving both accurate position determination and rapid response.
Solution Approach 2:
The invention extracts only the essential traveling area information (road coordinates and area identifiers) needed for position determination from the complete map data, storing it in a simplified format. This extracted information is sufficient for determining whether the vehicle is in a dangerous area ahead of the stopped vehicle, eliminating the need for complex map matching calculations while maintaining determination accuracy.
2Reliability
If map information processing is performed after receiving stop signal, then positional relationship can be determined, but warning execution is delayed
Solution Approach 1:
The system performs the information acquisition and storage of traveling area data in advance, before the emergency situation occurs. The area information storage unit continuously holds updated traveling area information, so when a stop signal is received, the system can immediately compare the vehicle's position with pre-stored area data to determine if a warning is needed, achieving both reliability and speed.
Solution Approach 2:
The system maintains its own traveling area information independently through the area information storage unit, which stores road geometry and area identifiers specific to the vehicle's route. This self-contained information allows the system to autonomously determine positional relationships without requiring external map services or complex real-time data processing, enabling rapid warning execution.
Data Source
AI summary
An information processing system includes: an information acquisition unit that acquires traveling area information of the vehicle; an entry determination unit that determines whether the vehicle has entered a specific range; an area information storage unit that stores the traveling area information when the vehicle has entered the specific range; a reception unit that receives a stop signal including information on a stop position of a different vehicle different from the vehicle when the different vehicle stops traveling or is in a state difficult to continue normally traveling; a relation determination unit that determines a positional relationship between the different vehicle and the vehicle, based on the information on the stop position and the traveling area information; and a processing execution unit that executes a predetermined process in accordance with a determination result.