Path-Specific Rolling Resistance Data for Vehicle Route Energy Control
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Solution Overview
Problem
Current road surface monitoring systems do not effectively provide path-specific rolling resistance data to vehicles, which is crucial for optimizing energy consumption and route planning, especially for electric vehicles, due to limitations in data collection and dissemination methods.
Innovation Solution
A method for determining path-specific rolling resistance by collecting and processing rolling resistance data from multiple sources, including vehicles and fixed monitoring stations, using optical and sensor data, and providing this information to target vehicles to adjust travel planning and route choices for reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If rolling resistance data is collected from multiple sources and processed to determine path-specific values, then the accuracy and usefulness of the data for energy optimization is improved, but the system complexity and data processing requirements increase
Solution Approach 1:
The patent segments the road network into discrete path portions and collects rolling resistance data for each segment from multiple sources (vehicles, monitoring stations). This segmentation allows the system to build a detailed database of path-specific characteristics without requiring a monolithic complex system, as each segment can be independently monitored and processed.
Solution Approach 2:
The system employs multi-functional data collection mechanisms where vehicles serve dual purposes: as sources of rolling resistance data through their sensors and as consumers of the processed data for route optimization. Fixed monitoring stations similarly provide both measurement and verification functions. This multi-functionality reduces overall system complexity by eliminating dedicated separate systems for each function.
2Loss of energy
If path-specific rolling resistance data is provided to vehicles for route optimization, then energy consumption is reduced, but the quantity of data to be transmitted and processed increases
Solution Approach 1:
The system extracts only the essential rolling resistance characteristics from the raw data collected by multiple sources, isolating the specific path portions with high rolling resistance. Instead of transmitting all raw sensor data, the system extracts and transmits only the relevant path-specific resistance values and route recommendations, significantly reducing data volume while maintaining the energy optimization benefit.
Solution Approach 2:
The system performs preliminary processing and aggregation of rolling resistance data from multiple sources before providing it to vehicles. By pre-computing path-specific rolling resistance values and identifying optimal routes in advance, the system reduces the real-time data processing burden on vehicles and minimizes the quantity of data that needs to be transmitted during actual travel.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables vehicles to optimize their routes and energy usage by providing accurate path-specific rolling resistance data, leading to reduced energy consumption and improved travel efficiency.
Implementation Method 1
The measurement data may comprise optical measurement data. The optical measurement data may be obtained using infrared light. The measurement data may comprise an indication of a reflectivity spectrum of the road surface.
Implementation Method 2
The optical measurement data may comprise an indication of a reflectivity spectrum of the road surface.
Data Source
AI summary
Path specific rolling resistance is determined in a method including: receiving, from a first source, first rolling resistance data of a first set of road surface portions of a corresponding first set of times; receiving, from a second source, second rolling resistance data of a second set of road surface portions of a corresponding second set of times; determining, using any of the first rolling resistance data and the second rolling resistance data, a path specific rolling resistance for a given path including one or more of the road surface portions selected from the first and second set of road surface portions; and providing at least one target vehicle with the path specific rolling resistance or a derivative of the path specific rolling resistance.