Driving Tendency Calculation Prohibition for Accuracy
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Solution Overview
Problem
Existing methods for determining a driver's short-term driving tendency are inaccurate when the vehicle is following another vehicle at slow speeds or in situations where the driving tendency is influenced by the forward vehicle, leading to incorrect tendency determination.
Innovation Solution
An apparatus and method using a driving information collecting unit, a short-term driving tendency calculating module based on fuzzy control theory, and a calculation prohibition control module that prohibits calculation when the inter-vehicle distance is less than a predetermined reference value, which increases with vehicle speed, to accurately determine the short-term driving tendency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving tendency is continuously calculated when the vehicle follows a forward vehicle, then the system continuously monitors driver behavior, but the driving tendency determination becomes inaccurate because vehicle speed is associated with the forward vehicle's speed regardless of driver tendency
Solution Approach 1:
The system dynamically adjusts the calculation prohibition based on inter-vehicle distance and forward vehicle speed. When the forward vehicle's speed changes significantly or the inter-vehicle distance exceeds a threshold, the system allows driving tendency calculation. This dynamic adjustment resolves the contradiction by enabling continuous monitoring while preventing inaccurate calculations in congested conditions where the driver has little control over vehicle speed.
Solution Approach 2:
The system changes the calculation state based on parameter thresholds (inter-vehicle distance, forward vehicle speed change rate). By monitoring these parameters and switching between calculation prohibition and calculation enablement states, the system maintains reliability by avoiding inaccurate measurements while preserving continuous monitoring capability in appropriate conditions.
2Measurement precision
If the driving tendency calculation is performed in congested conditions with small inter-vehicle distance, then the system provides continuous feedback, but the determination becomes inaccurate as the driver's speed control is constrained by the forward vehicle
Solution Approach 1:
The system performs preliminary assessment of inter-vehicle distance and forward vehicle speed before initiating driving tendency calculation. By checking these conditions in advance, the system prevents inaccurate measurements from occurring in the first place, thereby maintaining measurement precision without unnecessary calculation prohibition time.
Solution Approach 2:
The system continuously monitors inter-vehicle distance and forward vehicle speed as feedback parameters. When these parameters indicate congested conditions, the system prohibits calculation. This feedback mechanism ensures measurement precision by adapting to real-time traffic conditions while minimizing calculation prohibition time when conditions improve.
3Measurement precision
If the system prohibits calculation when inter-vehicle distance is small, then accurate determination is achieved in congested conditions, but the system complexity increases due to additional control logic
Solution Approach 1:
The system applies calculation prohibition only in specific local conditions (small inter-vehicle distance, congested traffic) rather than universally. This localized approach maintains measurement precision where needed while avoiding unnecessary complexity in the overall control system. The control logic is simplified by targeting specific problematic scenarios rather than implementing complex global solutions.
Data Source
AI summary
An apparatus and a method determines a short-term driving tendency. The apparatus may include a driving information collecting unit configured to collect driving information including a vehicle speed, and an inter-vehicle distance between the vehicle of the driver and a forward vehicle, a short-term driving tendency calculating module configured to receive a plurality of input variables for determining the short-term driving tendency and calculate a short-term driving tendency index using a fuzzy control theory, and a calculation prohibition control module configured to check the inter-vehicle distance between the vehicle of the driver and the forward vehicle and prohibit calculation of the short-term driving tendency index when the inter-vehicle distance is equal to or less than a predetermined reference value.