Vehicle Control Device for Automated Driving Takeover Preparation
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Solution Overview
Problem
Conventional vehicle control devices fail to provide drivers with adequate warnings and information regarding the transition from automated driving to manual driving, leading to situations where drivers are unexpectedly required to switch to manual control when unprepared.
Innovation Solution
A control device for vehicles that includes an automated driving information acquiring system, an information provision system, and a driving intervention degree control system, which anticipates the switching point to manual driving, assesses the difficulty of take-over, and adjusts the driving intervention level accordingly, providing the driver with necessary information to prepare for the transition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automated driving control is implemented without considering future switching to manual driving, then automated driving performance is improved, but driver preparedness for manual take-over deteriorates
Solution Approach 1:
The system performs preliminary actions by gradually increasing the demanded driving intervention degree before the anticipated switching point. The driving intervention degree control part adjusts the driver's required intervention level in advance based on predicted switching scenarios, ensuring the driver is progressively prepared for manual take-over rather than being abruptly switched at the last moment.
2Speed
If the driver is asked to switch to manual driving when not prepared, then switching responsiveness is improved, but driving safety and comfort deteriorate
Solution Approach 1:
The system applies beforehand cushioning by gradually adjusting the driving intervention degree before the switching point is reached. This progressive adjustment acts as a cushion, preventing abrupt transitions that would cause driver discomfort or safety issues while still maintaining the ability to switch to manual driving when necessary.
3Reliability
If driving intervention degree is increased gradually based on distance to switching point and take-over difficulty, then driver preparedness is improved, but system complexity increases
Solution Approach 1:
The system implements parameter changes by dynamically adjusting the driving intervention degree parameter based on two key variables: the distance to the anticipated switching point and the assessed difficulty of take-over. This parameter-based control approach manages complexity by focusing on critical variables rather than implementing comprehensive monitoring of all possible driving conditions.
Data Source
AI summary
A control device for a vehicle that has a sensor that acquires automated driving information required for automated driving and a display that provides a driver with information. The control device includes an electronic control unit including a processor configured to: perform automated driving for automatically performing operations for driving the vehicle based on the automated driving information; and make a driving intervention degree of the driver change during automated driving, including: judge a distance or a required time until an anticipated switching point where switching to manual driving is anticipated; judge a difficulty of take-over of a driver when switching to manual driving; set a demanded driving intervention degree of a driver during automated driving based on the distance or required time up to the anticipated switching point and the difficulty of take-over; and provide information relating to the demanded driving intervention degree to the driver.