Dynamic Route Recalculation for Electric Vehicles
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Solution Overview
Problem
Electric vehicles may deviate from calculated travel routes or experience changes in route conditions, leading to excessive power consumption and potential failure to reach charging equipment, necessitating recalculation of routes while minimizing calculation load.
Innovation Solution
A travel route guide device and system that includes a recalculation determination unit to assess power consumption and travel time constraints in local regions, allowing for dynamic recalculation of routes to ensure the vehicle reaches charging stations without excessive computational burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the travel route is recalculated at any time while the electric vehicle is traveling, then the reliability of reaching charging equipment is improved, but the calculation load increases excessively
Solution Approach 1:
The travel route is divided into multiple local regions, and recalculation is performed selectively for specific regions rather than the entire route. This segmentation allows the system to maintain reliability by monitoring and recalculating only when necessary in specific segments, thereby reducing overall calculation load.
Solution Approach 2:
The recalculation determination unit dynamically determines whether recalculation is necessary based on current conditions such as power consumption rates and travel time constraints. This dynamic approach allows the system to adapt recalculation frequency and scope to actual driving conditions, improving reliability when needed while minimizing unnecessary calculations.
2Adaptability or versatility
If the electric vehicle travels outside the calculated travel route or situation changes, then the adaptability to real-time conditions is improved, but the power consumption exceeds the assumed rate
Solution Approach 1:
The system continuously monitors actual power consumption and compares it with assumed consumption rates. When deviations are detected or when the vehicle travels outside the calculated route, the feedback mechanism triggers recalculation of the travel route, allowing the system to adapt to real-time conditions while managing power consumption effectively.
Solution Approach 2:
The system pre-calculates travel routes with built-in constraints for power consumption and travel time. By establishing these constraints in advance and monitoring them during travel, the system can take preliminary actions to prevent excessive power consumption while maintaining adaptability to changing conditions.
Data Source
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AI summary
A travel route guide device includes a travel route calculation unit (121) that calculates a travel route from a current position to a destination based on current position information, destination information, and a remaining amount of power of an electric vehicle, and information on a remaining power amount recovery facility, a region division unit (122) that divides a region including the travel route calculated by the travel route calculation unit into a plurality of local regions, a constraint condition determination unit (123) that determines a constraint condition for a monitoring variable related to power consumption, for each of the local regions divided by the region division unit, and a recalculation determination unit (124) that monitors, for a traveling electric vehicle, the monitoring variable corresponding to the local region including a position of the electric vehicle, and requests the travel route calculation unit to calculate the travel route when a value of the monitoring variable deviates from the constraint condition.