Driving Performance Assessment via Multi-Parameter Mapping
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Solution Overview
Problem
Current methods for assessing driving performance are inadequate as they rely on blunt measures like fuel consumption, which vary by vehicle type and conditions, and lack reliable data for many vehicles, making it difficult to accurately compare and improve driving efficiency across different drivers and vehicles.
Innovation Solution
A method and system that repeatedly read updated driving data sets from vehicles, using a server to collect and map current-trip data to historic data sets based on conformity measures, calculating energy consumption-based trip performance parameters from instantaneous velocity, engine speed, and energy consumption changes, allowing for accurate assessment of driving performance across different drivers and vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fuel consumption is used to measure driving performance, then environmental impact can be tracked, but the measure is blunt and varies by vehicle type and conditions
Solution Approach 1:
The patent changes the measurement parameters from simple fuel consumption to multiple driving parameters including instantaneous velocity, engine rotation speed, velocity change, engine rotation speed change, motor load, and energy consumption. By measuring multiple parameters simultaneously and analyzing their relationships, the system achieves precise measurement of driver behavior that is independent of vehicle type and operating conditions.
Solution Approach 2:
The patent creates a universal assessment system that can evaluate driving performance across different vehicle types (cars, trucks, buses, motorcycles) and operating conditions. The system uses standardized parameters that can be collected from various vehicles through different interfaces (CAN-bus, OBD, smartphone sensors), making the assessment methodology universally applicable while maintaining precision through multi-parameter analysis.
2Measurement precision
If multiple driving parameters are collected and analyzed, then measurement accuracy improves, but data processing complexity increases
Solution Approach 1:
The patent segments the complex assessment task into distinct functional modules: data collection module (collecting parameters from vehicle interfaces), data processing module (filtering and validating data), analysis module (comparing against reference values and calculating scores), and feedback module (presenting results to drivers). This segmentation reduces overall system complexity by making each module independent and manageable while maintaining high measurement precision through coordinated operation of all modules.
Solution Approach 2:
The patent introduces intermediary components including reference value databases that store ideal driving parameter ranges for different conditions, and processing algorithms that act as mediators between raw sensor data and performance assessments. These intermediaries simplify the complexity by providing standardized reference frameworks and automated comparison logic, reducing the burden on the overall system while enhancing measurement precision.
Data Source
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AI summary
Method for automatically assessing performance of a driver (110) of a vehicle (100) for a particular trip, wherein current driving data sets, comprising basic driving data are repeatedly read from the vehicle, which method comprises the steps a) collecting previous-trip driving data sets, comprising instantaneous vehicle energy consumption, for different previous trips,different drivers and different vehicles; b) mapping said current-trip driving data sets to a basic historic groups; and c) calculating a performance parameter value for the current trip based upon a respective group performance parameter value for each basic historic group; wherein said basic parameter set comprises velocity, engine rotation speed, velocity change and engine rotation speed change, and/or motor load, energy consumption, motor load change and energy consumption change. The invention also relates to a system.