Autonomous Driving Confidence Display for Driver Reassurance
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Solution Overview
Problem
Existing systems for preventing driver fatigue during autonomous driving lack the ability to inform drivers about the reliability and confidence of the autonomous driving system, failing to provide reassurance and reliability regarding permissible actions during autonomous control.
Innovation Solution
An information presenting apparatus comprising a system confidence level calculator, an information presenter, and an information presentation controller that determines and displays to the driver the allowability of actions other than driving based on the system confidence level, calculated from sensor detection rate, CPU load, and path fidelity, enabling the driver to understand the autonomous driving system's condition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the autonomous driving control is implemented without providing information on system confidence level, then the productivity and ease of operation are improved, but the reliability and driver reassurance deteriorate
Solution Approach 1:
The system continuously monitors sensor detection rates, CPU load, and path fidelity to calculate a system confidence level, then provides feedback to the driver through the information presenter about the allowability of secondary activities. This closed-loop feedback mechanism maintains autonomous driving productivity while building driver reassurance through transparent system status communication.
Solution Approach 2:
The information presenter acts as an intermediary between the autonomous driving control system and the driver. It translates complex system parameters (sensor detection rate, CPU load, path fidelity) into understandable information about action allowability, bridging the gap between system operations and driver understanding without compromising either productivity or reliability.
2Ease of operation
If the driver is allowed to perform multiple secondary activities during autonomous driving, then the ease of operation is improved, but the safety and reliability deteriorate when system confidence is low
Solution Approach 1:
The system dynamically adjusts the allowability of secondary activities based on real-time system confidence level. When sensor detection rate, CPU load, and path fidelity indicate high confidence, more secondary activities are permitted. When these parameters deteriorate, the system automatically restricts secondary activities, maintaining safety while maximizing ease of operation under favorable conditions.
Solution Approach 2:
The system uses changes in key parameters (sensor detection rate, CPU load, path fidelity) to determine system confidence level, which directly controls the set of permissible secondary activities. This parameter-based control mechanism ensures that ease of operation is optimized when system performance is good, while reliability is protected when parameters indicate declining system confidence.
3Reliability
If the system restricts secondary activities to maintain safety, then the reliability is improved, but the ease of operation and driver satisfaction deteriorate
Solution Approach 1:
Rather than imposing static restrictions on secondary activities, the system dynamically adapts the level of restriction based on real-time system confidence. This dynamic approach minimizes unnecessary restrictions when the system is performing well, thereby maintaining reliability while maximizing driver ease of operation and satisfaction during normal autonomous driving conditions.
4Device complexity
If the alarm is sounded only in normal mode without considering system confidence level, then the device complexity is reduced, but the measurement precision and appropriateness of alarm timing deteriorate
Solution Approach 1:
The alarm control system uses parameter changes in system confidence level (derived from sensor detection rate, CPU load, and path fidelity) to determine appropriate alarm timing. When system confidence drops below thresholds or secondary activities are restricted, the alarm is triggered to alert the driver. This parameter-driven approach enhances alarm timing precision without significantly increasing device complexity.
Data Source
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AI summary
An information presenting apparatus (100) includes a system confidence level calculator (13) configured to calculate a system confidence level of autonomous driving control, an information presenter (15) configured to present, to a driver, information on allowableness of an action other than driving, and an information presentation controller (14) configured to control switching of a content of the information presented on the information presenter according to the system confidence level calculated by the system confidence level calculator.