Digital Map Data Processing for Vehicle Coasting Optimization
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Solution Overview
Problem
Existing digital map systems require significant memory to store topographical route data, including gradient information, which is inefficient and unnecessary for vehicle coasting strategies, as only partial route data is needed for specific coasting events.
Innovation Solution
The method involves linking topographical route data exclusively with position data for a partial route, reducing storage requirements by only storing data relevant to the specific coasting event, and using averaged incline data to calculate an optimal coasting strategy, which includes determining the length of the partial route based on vehicle parameters and operating states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all topographical route data is stored for the entire route in the digital map, then complete route information is available, but storage space requirements increase significantly
Solution Approach 1:
The patent divides the route into segments based on coasting events. Topographical data is stored only for the relevant segment before each coasting event (where coasting is beneficial) rather than for the entire route. This segmentation allows the system to maintain reliability for coasting operations while significantly reducing overall storage requirements.
Solution Approach 2:
The patent applies local quality by storing detailed topographical data only in specific locations where it is needed (before coasting events) rather than uniformly across the entire route. Areas where coasting is not beneficial have minimal or no topographical data stored, optimizing the balance between information completeness and storage efficiency.
2Quantity of substance
If topographical route data is stored only for a partial route before coasting events, then storage space is reduced, but complete route information is not available
Solution Approach 1:
The patent performs preliminary identification of coasting events and pre-calculates which route segments will benefit from coasting. Based on this preliminary analysis, topographical data is selectively stored only for the necessary partial routes before coasting events, ensuring that data is available when needed while minimizing storage requirements.
Solution Approach 2:
The system uses vehicle parameters and operating conditions to automatically determine where coasting is beneficial, eliminating the need to store all possible route data. The system serves itself by intelligently selecting which data to store based on actual coasting potential, rather than relying on complete pre-stored route information.
3Measurement precision
If detailed topographical data is stored for the entire route, then precise coasting calculations can be performed, but memory requirements increase
Solution Approach 1:
The patent extracts only the essential topographical data needed for coasting calculations from the complete route data. By taking out and storing only the gradient and elevation information for segments before coasting events, the system maintains sufficient precision for accurate coasting calculations while dramatically reducing memory requirements compared to storing all route data.
4Adaptability or versatility
If complete route topography is stored, then all possible route conditions are covered, but data processing and storage efficiency decrease
Solution Approach 1:
The patent applies partial action by storing topographical data only for the extent necessary to handle coasting events. Rather than storing excessive data for the entire route, the system stores just enough data (partial coverage) for the segments where coasting is beneficial, achieving adequate adaptability for coasting operations while improving storage efficiency.
Data Source
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AI summary
The invention relates to a method for processing mapping data on a digital map, wherein mapping data comprising topographic route data for a route and position data of a predetermined route position in the route is provided (701), wherein speed data of a vehicle target speed at the predetermined route position is assigned to the position data, wherein the topographic route data assigned to a partial route of the route located before the predetermined route position relative to a direction of travel is associated with the position data (703) exclusively for said partial route, wherein the associated data is saved as processed mapping data of a processed digital map (705). The invention further relates to a corresponding apparatus and a corresponding computer program.