Driver Distraction Detection Using Lateral Jerk
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Solution Overview
Problem
Existing vehicle systems face challenges in accurately detecting driver distraction due to variations in vehicle speed and steering information, leading to increased errors at low speeds and missed detections at high speeds.
Innovation Solution
An apparatus and method that utilize a jerk calculating processor to calculate lateral jerk based on driving information, an exception event detecting processor to identify specific events during normal driving, and a determining processor to detect oversteering by comparing the calculated jerk with reference values, thereby determining driver distraction independently of vehicle speed and steering information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If steering information or lane detection information is used to detect oversteering or fast steering, then driver distraction can be detected, but the detection performance is greatly influenced by vehicle speed causing errors at low speed and missed detections at high speed
Solution Approach 1:
The patent changes the detection parameter from steering information (steering angle, steering torque) or lane detection information to lateral jerk information. By using lateral jerk as the detection parameter, the system achieves consistent detection performance across different vehicle speeds, steering ratios, and steering feelings, resolving the speed-dependent detection errors of the conventional approach
Solution Approach 2:
The patent replaces the mechanical steering system detection (steering angle sensor, steering torque sensor) with an acceleration-based detection system using lateral jerk. This substitution eliminates the influence of mechanical steering characteristics and vehicle speed on detection accuracy
2Measurement precision
If steering information is used for determination logic, then driver distraction can be detected, but low steering ratio or light steering feeling causes undesired high sensitivity and increases errors
Solution Approach 1:
By changing from steering angle/torque parameters to lateral jerk parameters, the system achieves consistent sensitivity across different vehicle configurations. The lateral jerk naturally normalizes the detection signal, eliminating the need for complex sensitivity adjustments for different steering ratios or steering feelings
3Measurement precision
If steering information is used for determination logic, then driver distraction can be detected, but high steering ratio or heavy steering feeling undermines detection capability and increases probability of missed detections
Solution Approach 1:
The patent changes the detection parameter to lateral jerk, which provides consistent detection reliability across different steering ratios and steering feelings. The lateral jerk signal maintains sufficient magnitude and clarity regardless of the steering system characteristics, ensuring reliable driver distraction detection in all vehicle configurations
Data Source
AI summary
An apparatus and method for determining driver distraction based on a jerk and a vehicle system are provided. The apparatus includes: a jerk calculating processor to calculate a lateral jerk of a vehicle based on driving information collected when the vehicle is traveling, an exception event detecting processor to detect an exception event defining a situation where the lateral jerk occurs during normal driving based on the collected driving information, and a determining processor to detect oversteering of the vehicle by comparing the calculated lateral jerk with a reference value and determine a driver distraction based on the detected oversteering and exception event.