Digital Map Update for Stationary Traffic Access
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Solution Overview
Problem
Navigation systems often guide vehicles to the closest road to a facility for stationary traffic, such as a parking area with electric vehicle charging stations, without considering that the access ramp may be too far away, leading to inefficiencies in route planning and resource usage.
Innovation Solution
A method and system for continuously detecting whether a vehicle is on a road or a facility for stationary traffic, determining the departure point, and updating digital map material only when the vehicle is about to access the facility, ensuring accurate route planning and minimizing resource usage by integrating data from sensors and historic information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If navigation systems guide vehicles to the closest road to a facility for stationary traffic, then the routing distance is minimized, but the vehicle may not be able to access the facility due to distant access ramps
Solution Approach 1:
The system performs preliminary analysis of access ramps and their distances to facilities before generating routing recommendations. By pre-processing this spatial relationship data, the system can proactively identify suitable access points that ensure both proximity and actual accessibility, preventing the problem of guiding vehicles to roads that lead nowhere useful.
Solution Approach 2:
The system introduces access ramp information as an intermediary element between the road network and the facility. This intermediate layer of spatial data acts as a mediator that connects the routing system to the actual accessibility conditions, allowing the navigation to account for physical access constraints that exist between roads and facilities.
2Measurement precision
If digital map material is continuously updated with vehicle location data, then route planning accuracy is improved, but resource consumption and data transfer increase
Solution Approach 1:
Instead of continuous updating, the system employs periodic updates triggered by specific events such as when a vehicle approaches a facility or when routing decisions need to be made. This event-driven periodic action maintains necessary accuracy while avoiding the constant resource consumption of continuous real-time updates.
Solution Approach 2:
The system applies different update frequencies and data processing intensities to different geographic regions and situations. Areas with facilities and access ramps receive more detailed and frequent updates, while other regions use standard updating. This local differentiation optimizes resource usage by concentrating computational and communication resources where they are most needed for route planning accuracy.
Data Source
AI summary
A method for updating digital map material for motor vehicles includes the following steps: during operation of a motor vehicle, continuously detecting whether the motor vehicle is currently located on a road or a facility for stationary traffic; if it is detected that the motor vehicle has driven from a road onto a facility for stationary traffic, determining a departure point at which the motor vehicle has left the road and driven onto the facility for stationary traffic; updating the digital map material based on the determined departure point; and providing the updated digital map material.