Vehicle-Aware Navigation Routing for Propulsion Stress Reduction
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Solution Overview
Problem
Current navigation systems fail to account for factors that affect occupant experience, such as vehicle characteristics and road configurations, leading to potential discomfort and stress during navigation.
Innovation Solution
A navigation system that utilizes a vehicle controller to determine vehicle mass, height, and width, and communicates with a server to select routes based on propulsion comfort scores and road segment characteristics, considering vehicle class, road grade, and power ratios to optimize route selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If current navigation systems select routes based only on traditional factors (time, length, traffic, fuel), then routing efficiency is maintained, but occupant comfort and experience deteriorate due to unaccounted vehicle characteristics and road configurations
Solution Approach 1:
The patent segments the routing decision into multiple evaluation dimensions: traditional factors (time, distance, traffic) and new factors (vehicle characteristics, road grade, propulsion stress). Each dimension is evaluated separately and aggregated to select the optimal route, allowing comprehensive consideration without overwhelming system complexity
Solution Approach 2:
The system performs preliminary determination of vehicle characteristics (mass, height, width, power) and road segment properties before route selection. This advance preparation enables the routing algorithm to efficiently evaluate propulsion comfort scores without adding real-time computational burden during navigation
2Reliability
If navigation systems account for additional factors like vehicle mass, height, width, and road grade, then occupant experience is improved, but system complexity and computational requirements worsen
Solution Approach 1:
The patent creates a universal routing framework that can handle multiple vehicle types and road conditions through a standardized propulsion comfort score calculation. The system uses general vehicle characteristics (mass, height, width, power) that apply to all vehicles, enabling the same algorithm to serve diverse routing needs without requiring vehicle-specific customization
Solution Approach 2:
The patent introduces propulsion comfort score as an intermediary metric that mediates between detailed vehicle/road parameters and final route selection. This intermediate representation simplifies the decision-making process by aggregating multiple factors into a single comparable score for each road segment, reducing computational complexity
3Measurement precision
If the system calculates propulsion comfort scores for multiple routes, then route selection quality is improved, but processing time and computational energy worsen
Solution Approach 1:
The patent evaluates propulsion comfort scores for multiple routes simultaneously rather than sequentially, and considers more route options than traditional systems. This parallel evaluation approach, enabled by the standardized score calculation, actually reduces total processing time despite examining more factors, by avoiding iterative optimization
Data Source
AI summary
A system for routing a vehicle based on roadway characteristics includes a global navigation satellite system (GNSS) for determining a geographical location of the vehicle, a vehicle communication system for communicating with server systems, and a vehicle controller in electrical communication with the GNSS and the vehicle communication system. The vehicle controller is programmed to determine a vehicle mass, vehicle height, and vehicle width and receive a navigation request from an occupant of the vehicle. The vehicle controller is further programmed to determine a navigation route using at least the GNSS and the vehicle communication system in response to receiving the navigation request. The navigation route is based at least in part on the vehicle mass, vehicle height, and vehicle width.