Drive Mode Switching Control Device for Emergency Override
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Solution Overview
Problem
Current drive mode switching systems in vehicles lack the ability to quickly and accurately differentiate between emergency and non-emergency override operations, leading to prolonged delays in switching from automatic to manual drive mode during emergency situations.
Innovation Solution
A drive mode switching control device that includes an acquisition unit for sensing data, a driver state determination unit, an operation determination unit, and switching signal units to differentiate between emergency and non-emergency override operations, allowing immediate switching to manual mode in emergency situations and confirming driver readiness in non-emergency cases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If driver state determination is performed after override operation detection to ensure safety, then switching accuracy is improved, but switching time is prolonged in emergency situations
Solution Approach 1:
The system performs preliminary driver state determination before override operation occurs by continuously monitoring driver state during automatic driving. When an override operation is detected, the pre-acquired driver state information is immediately used for switching decision, eliminating the need for post-operation determination and reducing switching time while maintaining safety
Solution Approach 2:
The system dynamically adjusts the driver state determination timing based on the type of override operation detected. For emergency override operations, it uses pre-acquired state information for immediate switching. For non-emergency operations, it performs determination after the operation to confirm driver readiness, thus adapting the process to different operational contexts
2Device complexity
If uniform handling is applied to all override operations, then system simplicity is maintained, but emergency response speed is reduced
Solution Approach 1:
The system segments override operations into different types (emergency and non-emergency) based on detection criteria. This segmentation enables differentiated handling: emergency operations trigger immediate switching using pre-acquired driver state information, while non-emergency operations follow a different protocol, thus improving emergency response speed without significantly increasing overall system complexity
Solution Approach 2:
The system changes the parameter of driver state determination timing based on the override operation type. For emergency operations, it uses pre-acquired state information (determination before operation). For non-emergency operations, it performs determination after the operation. This parameter change enables faster emergency response while maintaining systematic handling
Data Source
AI summary
A driver state determination unit of a drive mode switching control device regularly or irregularly determines whether a driver's state is a state of being able to perform a driving operation in a manual drive mode. The drive mode switching control device determines whether an operation performed by the driver is an emergency override operation or a non-emergency override operation. The drive mode switching control device outputs a switching signal for switching an automatic drive mode to the manual drive mode when a determination result by the driver state determination unit immediately before detection of the emergency override operation is that a driver's state is a state of being able to perform a driving operation in the manual drive mode.