Vehicle Cruise Speed Recommendation Using Route Elevation Segments
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Solution Overview
Problem
Existing vehicle propulsion systems lack the ability to provide speed recommendations that optimize fuel economy based on internal and external factors, such as route elevation changes, in an intuitive manner.
Innovation Solution
A system that determines a projected route, samples elevation data, identifies uphill and downhill positions, and calculates corresponding cruise speeds to recommend optimal speeds for each segment, using a processor to communicate these recommendations to the operator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the system provides detailed cruise speed recommendations based on route elevation data, then fuel efficiency is improved, but the device complexity increases
Solution Approach 1:
The route is divided into multiple segments based on elevation changes, with each segment receiving tailored cruise speed recommendations. The system identifies start of uphill positions and start of downhill positions to create distinct cruise speed route segments, allowing optimized speed recommendations for each segment while managing computational complexity through structured data organization.
Solution Approach 2:
The system performs preliminary sampling of route elevation data at determined sampling resolutions before generating cruise speed recommendations. By pre-processing elevation data and identifying key positions (uphill/downhill starts) in advance, the system reduces real-time computational burden while maintaining fuel optimization capabilities.
2Measurement precision
If the system processes high-resolution route elevation data, then measurement precision is improved, but the loss of time increases
Solution Approach 1:
The system determines an appropriate sampling resolution and pre-samples route elevation data before generating cruise speed recommendations. This preliminary sampling approach reduces the volume of data requiring detailed processing while maintaining sufficient precision for accurate uphill/downhill position identification and segment creation.
Solution Approach 2:
The system extracts only the essential elevation information needed for cruise speed optimization by sampling at determined resolutions and identifying key positions (start of uphill/downhill). This extraction approach filters out redundant data while preserving the critical elevation changes necessary for fuel-efficient cruise speed recommendations.
Data Source
AI summary
A method for providing a cruising speed recommendation to an operator of a vehicle includes determining a projected route; receiving route characteristic data including route elevation data; determining a sampling resolution; sampling the route elevation data at the sampling resolution to generate sampled route elevation data; determining at least one start of uphill position and at least one start of downhill position; determining at least one cruise speed route segment based at least in part on the at least one start of uphill position and the at least one start of downhill position; determining a corresponding cruising speed for the at least one cruise speed route segment based at least in part on one or more of the route elevation data and the sampled route elevation data; and communicating the corresponding cruising speed for the at least one cruise speed route segment.