Automated Driving Handover Control for Urgency-Based Driver Requests
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Solution Overview
Problem
Existing vehicle control systems struggle to effectively transition from automated driving to manual driving when urgency is high, often requiring multiple and potentially confusing requests from the driver, which can lead to delayed responses during critical situations.
Innovation Solution
A vehicle control apparatus that includes a recognition unit to assess the surrounding situation, a driving control unit for controlling acceleration and steering, and a driving request unit that outputs sequential first and second requests based on urgency, with the second request being more urgent when high urgency is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sequential requests are output to prompt driving operation, then the driver is given time to respond, but the response time is delayed when urgency is high
Solution Approach 1:
The system dynamically adjusts the request output mode based on the calculated urgency level. When urgency is high, it directly outputs the second request without the first request. When urgency is low, it outputs requests sequentially. This dynamic adjustment resolves the contradiction by adapting the request sequence to the actual situation urgency.
Solution Approach 2:
The system changes the parameter of request sequence based on urgency level. By calculating urgency from surrounding situation recognition and changing the request output parameter (whether to output first request, second request, or both sequentially), the system optimizes driver response time while maintaining response reliability.
2Loss of time
If only urgent requests are output without sequential prompting, then quick driver response is achieved, but driver confusion may increase
Solution Approach 1:
The system changes the request output parameter based on calculated urgency. When urgency is high, it outputs only the second request for immediate response. When urgency is low, it outputs requests sequentially for better driver understanding. This parameter change resolves the contradiction between response speed and driver understanding.
3Ease of operation
If the system always outputs both requests sequentially, then driver understanding is maintained, but the complexity of the control system increases
Solution Approach 1:
The system uses dynamic judgment based on calculated urgency to determine whether to output one request or two requests sequentially. This dynamic control approach maintains driver understanding when needed while avoiding unnecessary complexity in normal situations, resolving the contradiction between driver understanding and system complexity.
Data Source
AI summary
A vehicle control apparatus includes a recognition unit configured to recognize a surrounding situation of a host vehicle, a driving control unit configured to control at least one of acceleration and deceleration and steering of the host vehicle based on a recognition result of the recognition unit and to perform driving control of the host vehicle, and a driving request unit configured to execute a driving change request or a driving operation request based on the surrounding situation during execution of the driving control. The driving request unit is configured to output a first request and a second request different from the first request. The driving request unit comprises a first mode in which the first request is output, and the second request is output when the first request is not satisfied, and a second mode in which the second request is output without outputting the first request.