Drive-Pattern Evaluation Device for Energy-Saving Performance
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Solution Overview
Problem
Existing fuel consumption evaluation devices fail to accurately assess energy-saving performance due to reliance on past drive patterns with different traffic states or road shapes, and they estimate best fuel consumption based on actual patterns, which may not be optimal for energy saving.
Innovation Solution
A drive-pattern evaluation device that generates an energy-saving drive pattern considering energy consumption, estimates energy consumption for both actual and energy-saving patterns, and compares these to evaluate the energy-saving performance of the actual drive pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If past fuel consumption is used as comparison reference, then evaluation can be performed, but the evaluation accuracy deteriorates due to different traffic states or road shapes
Solution Approach 1:
The patent creates a virtual model (copy) of the evaluation target vehicle's fuel consumption behavior through the fuel consumption model. This model replicates the vehicle's driving characteristics, engine parameters, and transmission characteristics to generate estimated fuel consumption values that can be accurately compared without being affected by external conditions like traffic or road shape variations
Solution Approach 2:
The patent introduces a fuel consumption model as an intermediary between the actual fuel consumption measurement and the evaluation process. This model acts as a mediator that translates actual driving data into estimated fuel consumption values, enabling accurate comparison while filtering out the effects of varying external conditions
2Measurement precision
If best fuel consumption is estimated based on actual drive pattern, then comparison is made on same drive section, but the evaluation reference becomes insufficient because actual pattern may not be optimal for fuel saving
Solution Approach 1:
The patent performs preliminary analysis of the actual drive pattern to identify segments where fuel saving is possible. By预先 (in advance) determining which drive sections can be improved and calculating the theoretical best fuel consumption for those sections, the system creates an optimized evaluation reference that guides drivers toward energy-efficient driving behaviors
Solution Approach 2:
The patent changes the evaluation parameter from comparing actual fuel consumption directly to comparing actual fuel consumption against the theoretically optimal fuel consumption for each drive section. This parameter transformation allows the system to evaluate how close the driver's actual performance is to the ideal fuel-saving drive pattern
Data Source
AI summary
An object of the present invention is to provide a drive-pattern evaluation device for appropriately evaluating energy-saving performance of a drive pattern. A drive-pattern evaluation device of the present invention is a drive-pattern evaluation device which evaluates a past actual drive pattern of a moving body based on energy consumption, the device including: an energy-saving drive pattern generating unit that generates an energy-saving drive pattern in consideration of energy consumption with respect to an evaluation section of the actual drive pattern; an energy consumption estimating unit that estimates energy consumption by the energy-saving drive pattern as an estimated energy-saving consumption; and an eco-score calculator that compares energy consumption by the actual drive pattern in the evaluation section and the estimated energy-saving consumption, to evaluate the actual drive pattern based on the comparison result.