Autonomous Driving Margin Time Calculation for Driver Response
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Solution Overview
Problem
Existing autonomous driving vehicle control systems do not adequately consider the driver's margin time to understand and respond to operation requests, particularly when the time is short, which can lead to ineffective communication and safety issues.
Innovation Solution
A control system for autonomous driving vehicles that includes a margin time calculation part to determine the time the driver needs to initiate an operation and an information provision control part to adjust the type of information provided based on this margin time, ensuring the driver receives appropriate information to quickly understand and respond to requests, especially when time is limited.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the system provides detailed information to the driver, then the driver's understanding is improved, but the response time increases
Solution Approach 1:
The information provision control part segments information delivery into two stages: first providing essential operation request information, then supplementing with additional detailed information only when margin time is sufficient. This segmentation resolves the contradiction by separating critical information from supplementary information, ensuring timely response while maintaining information completeness when possible.
Solution Approach 2:
The system dynamically adjusts the amount and type of information provided based on the calculated margin time. When margin time is short, only essential information is provided; when margin time is long, additional detailed information is supplied. This dynamic adaptation resolves the contradiction by making information provision flexible rather than fixed.
2Reliability
If the system requests operation from the driver quickly, then the safety is improved, but the driver's comprehension quality deteriorates
Solution Approach 1:
The system performs preliminary action by calculating margin time in advance and using this information to guide the information provision strategy. By knowing the available time beforehand, the system can prepare and deliver appropriately timed information, ensuring both safety through timely requests and comprehension quality through adequate information delivery.
Solution Approach 2:
The system changes the parameter of information provision based on the margin time parameter. When margin time is short, information provision is limited to essential content; when margin time is long, more detailed information is provided. This parameter-based adjustment resolves the contradiction between safety and comprehension quality.
3Loss of information
If the system provides additional information to the driver, then the driver's understanding is improved, but the processing time increases
Solution Approach 1:
The system applies partial action by providing only the necessary amount of information based on margin time availability. When margin time is short, it provides minimal essential information; when margin time is long, it provides additional information. This partial action approach maintains information sufficiency when possible while preserving processing efficiency when time is constrained.
Data Source
AI summary
A control system for an autonomous driving vehicle is provided with an information provision device 10 configured to provide a driver with information and an operation request part configured to control the information provision device to provide the driver with information during autonomous driving to thereby request a predetermined operation to the driver. The operation request part is provided with a margin time calculation part configured to calculate a margin time until a timing at which the driver should start the operation when the operation should be requested to the driver and an information provision control part configured to provide the driver with information differing according to the margin time.