Autonomous Vehicle Control Transfer for Route Calculation Failure
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Solution Overview
Problem
Current autonomous driving systems lack the capability for the vehicle control system to proactively transfer control from automatic to manual mode when the travel route to avoid an object cannot be calculated, relying on driver intervention or passive system control.
Innovation Solution
A semiconductor device and on-vehicle control system that includes a camera, distance sensor, and user interface, enabling the system to judge and transfer control from automatic to manual mode by analyzing image and distance information to ensure safety, even if the driver does not actively operate the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the autonomous driving system relies on driver intervention or passive system control for mode transfer, then the system complexity is reduced, but the safety and reliability of control transfer is worsened because the system cannot proactively transfer control when travel route calculation fails
Solution Approach 1:
The system implements feedback by continuously monitoring the operational status of the autonomous driving system, specifically detecting when travel route calculation fails. This feedback mechanism enables the system to recognize critical states and trigger appropriate control transfer actions, improving reliability without requiring complex external intervention systems
Solution Approach 2:
The autonomous driving system performs self-service by autonomously detecting calculation failures and initiating control transfer to manual mode without requiring driver intervention. The system monitors its own operational status and independently executes the mode transfer when safety conditions are not met, thereby improving reliability while maintaining manageable system complexity
2Reliability
If the system proactively transfers control to manual mode when travel route cannot be calculated, then the safety is improved, but the extent of automation is worsened because the system abandons automatic control
Solution Approach 1:
The system applies dynamics by enabling flexible switching between automatic and manual control modes based on real-time operational conditions. When travel route calculation succeeds, the system operates in automatic mode; when calculation fails, it dynamically transitions to manual mode. This dynamic adaptability ensures safety while maintaining high extent of automation under favorable conditions
Solution Approach 2:
The system changes the control mode parameter from automatic to manual when specific conditions (travel route calculation failure) are detected. This parameter change mechanism allows the system to maintain high automation under normal conditions while ensuring safety by switching to manual control when necessary, effectively resolving the contradiction between automation extent and safety
3Ease of operation
If the system waits for driver action to transfer control, then the ease of operation is improved, but the response time to safety risks is worsened
Solution Approach 1:
The system takes preliminary action by proactively transferring control to manual mode when travel route calculation fails, before any safety incident occurs. This preliminary intervention eliminates the need to wait for driver action, thereby reducing control transfer time and ensuring timely response to safety risks while maintaining ease of operation through automated initiation
Data Source
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AI summary
To achieve an accurate transfer of control from a system to a driver, a semiconductor device includes: a recognition unit that recognizes an object present in the periphery of a vehicle based on a result of observation of the periphery of the vehicle; a route calculation unit that calculates, based on the recognized object, a travel route for the vehicle in an automatic control mode for automatically controlling the vehicle; and a mode control unit that transfers the vehicle from the automatic control mode to a manual control mode for controlling the vehicle according to an operation by a driver, when a travel route to avoid the recognized object cannot be calculated.