Vehicle Driving Energy Score Calculation via Instantaneous Acceleration
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Solution Overview
Problem
Existing vehicle fuel consumption evaluation systems fail to provide a technically objective and economically focused driving score, as they are heavily influenced by vehicle parameters and route conditions, making it difficult to assess driving quality and fuel efficiency effectively.
Innovation Solution
A device and process that calculate a driving energy score by measuring instantaneous speed and acceleration, comparing these parameters to a reference value, and canceling out vehicle and environmental factors, allowing for an iso-contextual evaluation of driving quality independent of vehicle performance and route conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If consumption measurement systems integrate multiple sensors to account for vehicle performance, route conditions, and environmental factors, then the evaluation becomes more comprehensive, but the device complexity and cost increase significantly
Solution Approach 1:
The patent extracts only the essential parameters needed for driving evaluation (speed and acceleration) from the complex set of factors affecting fuel consumption. By focusing on these two key parameters that directly reflect driver behavior, the system achieves evaluation capability without requiring complex sensor integration for vehicle performance, route conditions, and environmental factors.
Solution Approach 2:
The evaluation process is segmented into distinct functional modules: a measurement unit for acquiring speed and acceleration data, a calculation unit for computing the driving energy score, and a reference database for comparison. This modular segmentation simplifies the overall system architecture while maintaining comprehensive evaluation capability.
2Measurement precision
If existing systems use multiple sensors to correct consumption measurements for various influencing factors, then the measurement becomes more accurate, but the ease of adding the device to existing vehicles decreases
Solution Approach 1:
The evaluation device is designed as a universal system that can be installed on existing vehicles without requiring vehicle-specific modifications. By using standard sensors for speed and acceleration that are compatible with most vehicle types, the system achieves ease of installation while maintaining measurement accuracy through its sophisticated calculation and comparison algorithms.
3Measurement precision
If evaluation systems consider all factors including vehicle parameters, route conditions, and traffic conditions, then the overall consumption assessment improves, but the ability to isolate and evaluate driving quality alone deteriorates
Solution Approach 1:
The patent extracts the driving quality component from the total consumption picture by comparing actual speed and acceleration patterns against reference values that represent optimal driving behavior. This extraction isolates the driver's contribution to energy consumption, separating it from vehicle parameters, route conditions, and traffic factors.
Solution Approach 2:
Instead of trying to measure driving quality directly by adding complex sensors, the system inverts the approach by measuring what driving quality is not (deviations from optimal speed and acceleration patterns) and calculating the score from those deviations. This inversion simplifies the measurement process while maintaining focus on driving quality assessment.
Data Source
AI summary
Device (10) for vehicle driving evaluation comprising:A means (11) to obtain at least one physical parameter whereby it possible at any time to determine the value of the speed and instantaneous acceleration of a traveling vehicle;A calculation and comparison unit (12) whereby it is possible, from said physical parameter, to calculate an effective parameter that depends on said instantaneous acceleration and to compare said effective parameter with a reference parameter;A driving evaluation unit (13), whereby it is possible to generate a vehicle driving energy score by measuring the variance between said effective parameter and said reference parameter.Corresponding vehicle driving evaluation process.