Autonomous Driving Handover After Sensor Malfunction
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Solution Overview
Problem
Existing autonomous driving assistance devices fail to ensure safety when a sensor malfunction occurs, as they continue autonomous driving without considering surrounding conditions and vehicle state, leading to decreased safety during the transition from autonomous to manual driving.
Innovation Solution
An autonomous driving assistance device with a malfunction state detection section, travelling condition determining section, and manual driving control section that executes emergency autonomous driving until a predetermined condition is met, then switches to manual driving control, altering driving maneuvers based on determined conditions to ensure safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If autonomous driving continues without interruption after sensor malfunction detection, then system complexity is reduced, but safety decreases
Solution Approach 1:
The control system dynamically adjusts its operation mode based on sensor status. When a malfunction is detected, the system transitions from normal autonomous driving to emergency autonomous driving with modified control parameters, then to manual driving. This dynamic adaptation resolves the contradiction by making the system flexible rather than static, improving safety without requiring a completely separate complex safety system.
Solution Approach 2:
The autonomous driving control is segmented into distinct phases: normal autonomous driving, emergency autonomous driving (with altered maneuvers), and manual driving. This segmentation allows the system to handle sensor malfunctions by transitioning between well-defined operational states, managing complexity through structured phase transitions rather than continuous complex decision-making.
2Reliability
If emergency autonomous driving with altered maneuvers is executed, then safety is improved during transition, but device complexity increases
Solution Approach 1:
The system performs preliminary actions by pre-defining emergency driving maneuvers and transition protocols before malfunctions occur. The control unit is programmed with predetermined responses to sensor failures, executing pre-planned safety procedures rather than making real-time complex decisions. This reduces the actual computational complexity during critical moments while maintaining high safety standards.
Solution Approach 2:
The control unit acts as an intermediary between sensor input and vehicle actuation, introducing an additional decision layer that evaluates sensor reliability and selects appropriate driving modes. This intermediary processing layer manages complexity by centralizing the decision logic in a dedicated control unit that coordinates between normal and emergency operations.
3Reliability
If autonomous driving is terminated and manual driving is initiated, then safety is ensured, but loss of time occurs during mode switching
Solution Approach 1:
The system rushes through the transition process by executing predetermined switch-override maneuvers that quickly transfer control from autonomous to manual mode. Rather than gradual transitions that would take longer, the system implements rapid control handover protocols that minimize transition time while ensuring safety, skipping intermediate states that would delay the process.
Solution Approach 2:
The driver is alerted in advance of the mode transition through warning signals, allowing preliminary preparation for taking control. This preliminary notification reduces the actual transition time by ensuring the driver is ready to接管 control immediately when autonomous driving terminates, minimizing the gap between system handover and active manual control.
Data Source
AI summary
An autonomous driving assistance device includes a manual driving control section, an autonomous driving control section, and a travelling condition determining section. If it is detected that there is a malfunction in a first sensor during control of the autonomous driving of the vehicle, the autonomous driving control section executes emergency autonomous driving until a predetermined condition is satisfied while changing, based on the determined travelling condition, a driving manner of an emergency autonomous driving as compared with a driving manner of the autonomous driving executed before no malfunctions are detected in the first sensor; and after the emergency autonomous driving is terminated, the autonomous driving assistance device being configured to selectively execute one of: causing the autonomous driving control section to stop the vehicle; and causing the manual driving control section to control the manual driving.