Vehicle Handover Frequency Prediction for Automated Driving
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Solution Overview
Problem
Vehicle passengers lack clear information on the frequency and probability of handover events from automated to manual driving modes during a trip, making it difficult for them to anticipate and prepare for these transitions.
Innovation Solution
A vehicle control system that includes an automated drive control unit, a calculating unit, and a presentation unit to calculate and display the occurrence frequency or probability of handover events along a route, allowing passengers to understand when and where handovers will occur, enabling them to choose routes accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If automated driving control is implemented without providing handover frequency information, then the automated driving function can be provided, but the passenger cannot anticipate or prepare for handover events from automated to manual driving modes
Solution Approach 1:
The patent introduces an intermediary information processing system that calculates handover frequency based on route data and vehicle state, then presents this information to the passenger through a display interface. This intermediary layer bridges the gap between the automated driving control unit and the passenger, providing necessary information without requiring direct complex interaction between these components.
Solution Approach 2:
The system performs preliminary calculation of handover frequency before the actual automated driving journey begins. By computing the expected number of handovers based on the planned route and vehicle conditions in advance, the system allows passengers to anticipate upcoming handover events and prepare accordingly, rather than being surprised during the journey.
2Reliability
If handover frequency calculation and presentation functions are added to the vehicle control system, then passengers can anticipate handover events, but the system complexity increases
Solution Approach 1:
The patent makes the existing automated drive control unit perform multiple functions: not only controlling automated driving operations but also calculating handover frequency and presenting information to passengers. By enabling this multi-functionality within an existing component, the system avoids adding separate dedicated units for each function, thereby reducing overall system complexity while maintaining reliability.
Solution Approach 2:
The calculation and presentation functions are merged with the automated drive control unit rather than being implemented as separate independent systems. This consolidation integrates the handover frequency information provision into the existing control architecture, reducing the number of discrete components and simplifying system structure while still providing accurate handover predictions.
3Adaptability or versatility
If the system provides detailed handover frequency information for multiple routes, then passengers can make informed route selections, but the information processing load increases
Solution Approach 1:
The system calculates handover frequency information for multiple candidate routes but presents only the most relevant or optimal route to the passenger. By performing partial calculations for all candidate routes and then selecting the most important one for display, the system provides sufficient information for informed route selection without unnecessarily computing and presenting all possible route variations, thereby reducing computational energy consumption.
Data Source
AI summary
A vehicle control system includes: an automated drive control unit that performs automated driving where at least one of speed control and steering control of a vehicle is performed automatically, the automated drive control unit executing handover where an automated drive mode is switched to a manual driving mode; a calculating unit that calculates an occurrence frequency of the handover or an occurrence probability of the handover on a traveling route that the vehicle will travel; and a presentation unit that presents the occurrence frequency of the handover or the occurrence probability of the handover that has been calculated, to an occupant of the vehicle.