Steering Wheel Intent Detection for Autonomous Driving Handover
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Solution Overview
Problem
Existing vehicle control systems struggle to accurately determine whether the operation of the steering wheel during autonomous driving is due to the driver's intention, leading to potential accident risks.
Innovation Solution
A vehicle control device and method that assess the amount and duration of steering wheel operation, combined with grip strength and driver gaze analysis, to determine if control should be switched from autonomous driving to the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the autonomous driving system operates the steering wheel automatically, then driving stability and convenience are improved, but the risk of unintended steering wheel movements increases
Solution Approach 1:
The system continuously monitors steering wheel operation parameters (amount of operation, duration, grip strength) and uses this feedback to determine whether to switch from autonomous to manual control, creating a closed-loop safety mechanism that responds to actual driving conditions
Solution Approach 2:
The processor acts as an intermediary between the autonomous driving system and the steering wheel, intercepting control signals and deciding whether to allow autonomous operation or switch to manual control based on monitored parameters
2Reliability
If the system switches control to the driver frequently, then safety is improved, but driver convenience and system reliability are reduced
Solution Approach 1:
The system uses multiple parameters (amount of operation, duration, grip strength) with different weight values to dynamically assess control situation, allowing nuanced decisions about when switching is necessary rather than relying on simple threshold rules
3Measurement precision
If the system requires significant steering wheel operation to switch control, then false switching is reduced, but intentional driver input may be missed
Solution Approach 1:
The system dynamically adjusts control switching thresholds based on multiple real-time parameters including grip strength and operation duration, allowing the detection criteria to adapt to different driving situations and driver behaviors
Data Source
AI summary
A vehicle control device includes a processor and a steering wheel that specifies a driving direction of a host vehicle. The processor may determine that the host vehicle is under autonomous driving control. The processor may determine a threshold value or a threshold time value based on at least one of a maximum deceleration value among decelerations of the host vehicle measured during a specified time, a grip strength with which the steering wheel is gripped, or any combination thereof. The processor may switch control of driving of the host vehicle from a system for performing the autonomous driving to a driver based on the steering wheel being operated with an amount of operation greater than the threshold value or for a time greater than the threshold time value.