Vehicle Stop Control With Adaptive Delay for Following Traffic
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Solution Overview
Problem
Existing vehicle control systems lack the ability to appropriately adjust the automatic stop function based on the driver's intentions, leading to inappropriate vehicle stopping in various situations.
Innovation Solution
A vehicle control device that recognizes the surrounding situation and adjusts the automatic stop control based on the occupant's input operation, including setting a response confirmation time that varies depending on the presence and distance of a following vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If uniform control is performed on automatic stop function for different purposes, then the control system is simple, but the vehicle may not be appropriately stopped according to the purposes
Solution Approach 1:
The notification time is dynamically adjusted based on the detected purpose of automatic stop. When driver fatigue is detected, a longer notification time is provided. When other purposes are detected, a shorter notification time is used. This dynamic adjustment allows the system to adapt to different stopping purposes without requiring completely separate control systems for each scenario.
2Reliability
If the notification time before automatic stop is fixed, then the control logic is simple, but it may not account for different driving situations such as presence of following vehicles
Solution Approach 1:
The system performs preliminary detection of the driving situation, including detecting the purpose of automatic stop and detecting presence of following vehicles, before determining the notification time. This preliminary action allows the system to prepare appropriate notification timing in advance, ensuring safety without requiring complex real-time decision-making during the stopping process.
Solution Approach 2:
The notification time parameter is changed based on detected conditions. When a following vehicle is detected, the notification time is shortened. When no following vehicle is detected, the notification time is extended. This parameter adjustment optimizes safety for different driving situations while maintaining relatively simple control logic.
3Speed
If the vehicle stops immediately upon receiving stop instruction, then the response is fast, but it may disturb nearby traffic or cause safety issues
Solution Approach 1:
The system applies preliminary anti-action by providing a notification period before executing the automatic stop. This notification allows following vehicles to anticipate and react to the upcoming stop, reducing the harmful effect of sudden stopping on nearby traffic. The notification time is adjusted based on the presence of following vehicles to optimize this protective effect.
Data Source
AI summary
A vehicle control device includes: a recognizer configured to recognize a surrounding situation of a host vehicle; an input unit configured to receive an input operation from an occupant of the host vehicle; a controller configured to perform automatic stop control of decelerating and stopping the host vehicle when the input operation is received by the input unit; and a setter configured to perform a setting process of setting a first time after the input operation has been received by the input unit and until the automatic stop control is started by the controller. The setter is configured to change the first time based on a result of recognition of a following vehicle of the host vehicle from the recognizer in the setting process.